





The 24 x 42 casement window is a 610 x 1067 mm aluminum casement window with hand-crank operation, part of the DERCHI WY series. It offers three frame depth options (72, 86, 100 mm) with extensive customization in glass, hardware, color, and screen configurations for residential and commercial project procurement.
- 6063-T5 aluminum frame at 1.4 mm profile thickness with EPDM rubber sealing
- Double tempered glass with optional argon, warm-edge, Low-E, and laminated upgrades
- Made-to-size production within the W450-800 x H600-1500 mm opening panel range
- 12+ standard color and finish options including PVDF and wood grain

PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













PRODUCTS
100% thermal insulation/windproof/ soundproof

Description
Videos
Customizable Styles
Hardware Accessories
Advantages
Certificate


Bifold Patio Doors Connect Your Indoor And Outdoor Spaces
Bifold patio doors consist of two or more glass door panels that hinge together to open accordion-style, creating wide open spaces. This door type provides more flexibility to enjoy your outdoor entertaining areas. Bifold patio doors conveniently fold up to create a wide opening between the inside and out.
When closed, bifold patio doors create a virtual wall of glass that lets in a large amount of natural light. When open, the door panels fold neatly and store indoors or outdoors to expand your livable space into the outdoors — great for entertaining.

Tracks for these doors can be straight, meet at a 90-degree corner, or curve, adding design flexibility.
Fold neatly indoors or outdoors to create the opening width you desire
Ultimate design flexibility
Create a wide expansive opening
Expand your livable space
The key principle of a bi-folding door is that it allows the door to fold back while sliding on an in-built track. When you check the gallery of Bi-folding Door Factory, the bifold doors will look like a blend of sliding doors and French doors. However, bi-folding doors are flexible and can be used for small openings or as a partition to separate spacious spaces.
Bifold doors have been receiving a lot of attention over these past few years; coming as no surprise due to the fact that bi-fold doors have become more affordable in recent years. These doors can be made from different types of materials, such as aluminum, wood, and uPVC. To know which type of bi-fold door material is the best for your home, you have to consider first several factors: cost, appearance, weather resistance, and energy efficiency.
Applications
Residential building, Villa, Hotel, Apartment, Office Building, Home office, Outdoor
* Door Type: Folding/Bifold/Accordion Door
* Series: 78 Series
* Opening Way: Glass Panel Inward Folding / Outward Folding
* Profile thickness: 1.8mm thermal break aluminum profile
* Glass: 5mm+27A+5mm double tempered glass
* Hardware: KERSSENBERG brand Handle, Hidden hinge and Lock
* Available size: Opening Panel ( Width:500-800mm/Heigh:1000-2800mm)
* Surface Treatment: Powder Coating, Anodized Wooden Grain, PVDF Coating
Competitive Advantage
1. Thermal break aluminum profile
2. Heat and cold insulation
3. Anti-clamping hand
Competitive Advantage
1. 23A Magnet Blinds between double glass
2. 27A Electric / Light Blinds between double glass
3. Folding Flyscreen
4. Glass can be Triple tempered glass/Laminated/Lowe/Reflective /Tinted Glass













