The 28 x 48 casement window is a DERCHI aluminum hand-crank window from the WY-72, WY-86, and WY-100 cranked-out family. It offers customizable frame depths, glass packages, and hardware options for project buyers.
- Nominal size 711 x 1219 mm (0.87 m2) with flat-opening or hanging-up hand-crank operation
- 6063-T5 aluminum profile at 1.4 mm thickness with EPDM rubber strip sealing and double tempered glass
- Configurable for residential and commercial project applications
Product Details
This cranked-out aluminum window features a 6063-T5 aluminum profile at 1.4 mm thickness, paired with EPDM rubber strip sealing. Buyers can select from 72, 86, or 100 mm frame depths. The hand-crank mechanism differs from standard push-out windows by enabling outward opening without direct reach, giving users controlled ventilation in tight spaces.
The 28 x 48 in footprint fits kitchens, bedrooms, stairwells, and compact urban units. Glass upgrades including Low-E, argon, warm-edge, triple, and laminated options let procurement teams tune U-Factor and acoustic performance. Frame depth selection accommodates different climate zones and energy code demands.
Product Features
Hand-Crank Operation: The crank mechanism enables smooth outward opening without direct reach, making it suitable for installations above counters or behind furniture where access is limited.
Multi-Series Frame Depth: Selecting 72, 86, or 100 mm depths allows buyers to match structural wall conditions and local energy code requirements without altering the nominal window size.
Double Tempered Glass: Tempered glass with an air gap delivers safety and insulation value, with series-specific configurations like 5+27A+5 mm or 5+15A+5 mm available.
EPDM Rubber Strip Sealing: EPDM sealing contributes to verified air tightness at 4.5 m3/(m.h) and water resistance at 350 Pa, supporting reliable weather performance.
Customizable Glass Upgrades: Low-E, argon, warm-edge, triple, and laminated options let buyers tune U-Factor, SHGC, and acoustic performance to meet specific project targets.
Export-Grade Packaging: Wooden frames, pallet fixing, PE films, and air bags protect sea freight shipments, ensuring windows arrive safely for international project orders.
Customizable Styles
Glass: Double tempered, Low-E, triple, laminated, or blind-glass options selectable per project to meet specific thermal and acoustic performance requirements.
Frame Depth: Choose 72 mm, 86 mm, or 100 mm frame depth to match structural wall conditions and energy code demands for the project.
Size: Made-to-size from opening panel range W450-800 mm x H600-1500 mm; 28 x 48 in nominal size customizable per project requirements.
Color: Standard colors include Pearl White, Quartz Gray, Starry Sky Black, Deep Sea Blue, wood grain finishes; PVDF custom colors available with upcharge.
Layout: Single casement, awning, fixed plus operable composite, dual sash, three-segment, or irregular and stepped combinations available for project-specific opening configurations.
Hardware Accessories
Handle/Crank: American hand crank for WY-72 or Australian hanging hand crank for WY-86 and WY-100 series, enabling smooth outward opening operation.
Lock: Multi-point switch lock seat for WY-72 or single-point switch lock seat for WY-86 and WY-100, providing secure sash closure.
Limiter: Casement limiter at 60 RMB per piece or safety limiter at 168 RMB per piece controls opening angle for ventilation and child safety.
Top-Hung Hardware: Outward top-hung hardware set at 1650 RMB per set available as an awning-style operation alternative for projects requiring different opening methods.
Sealing/Screen: EPDM rubber strip sealing is standard; screen options include anti-theft, 304 stainless mesh, King Kong mesh, and 48-mesh high-transparency mesh.
Basic Parameters
Performance Item | Available Information | Buyer Notes |
|---|---|---|
Thermal Insulation | U-Factor 0.39, SHGC 0.25 | Confirm which glass configuration applies; verify if Low-E or argon upgrade needed for stricter energy codes. |
Wind Pressure Resistance | 5 KPa | Verify sufficiency against project-specific wind load and local code requirements. |
Water Tightness | 350 Pa | Confirm if this rating meets local weather exposure and building code for project location. |
Air Tightness | 4.5 m3/(m.h) | Confirm testing standard and grade classification applicable to target market requirements. |
Sound Insulation | 30 dB | Confirm if glass upgrade like argon, warm-edge, or laminated is needed for higher acoustic targets. |
Product Specifications
Specification | Details |
|---|---|
Nominal Size | 28 x 48 in (711 x 1219 mm) |
Approximate Area | 0.87 m2 |
Frame Material | 6063-T5 aluminum profile |
Profile Thickness | 1.4 mm |
Frame Depth Options | 72 / 86 / 100 mm |
Sealing | EPDM rubber strip |
Glass (WY-72/WY-100) | Double tempered 5+27A+5 mm |
Glass (WY-86) | Double tempered 5+15A+5 mm |
Opening Method | Flat opening / hanging up, hand-crank operation |
Opening Panel Size Range | W450-800 mm x H600-1500 mm |
Hardware | American/Australian hand crank with multi-point or single-point lock |
Advantages
Three frame depth options allow buyers to match structural and thermal requirements without changing the nominal window size.
Hand-crank operation enables controlled ventilation and is suitable for installations where direct reach is difficult, such as above counters or stairwells.
Multiple glass upgrade paths including Low-E, argon, warm-edge, triple, and laminated let buyers tune energy and acoustic performance per project.
Itemized pricing for safety limiters, screens, and thermal upgrades gives procurement teams transparent cost control across project budgets.
Export packaging with wooden frames, PE films, and air bags supports safe sea freight delivery for international project orders.
Application Scenarios
Apartment: The 28 x 48 casement window suits apartment kitchens and bedrooms where hand-crank operation provides ventilation control in compact spaces with limited exterior access and clearance.
Home Office: Hand-crank operation allows quiet and controlled airflow during work hours; double tempered glass reduces external disturbance, supporting focused home office environments and sustained daily productivity.
Hotel: Hotels benefit from the crank mechanism for guest-room ventilation control; customizable color and glass options align with interior design standards, brand requirements, and maintenance schedules.
Office Building: Office facades require consistent performance; the aluminum frame with EPDM sealing and configurable glass packages supports commercial energy and acoustic targets across varied climate zones.
Outdoor: Outdoor-facing enclosures such as balconies and stairwells benefit from the crank-out mechanism and optional safety screens, effectively addressing weather-exposed ventilation needs and occupant protection requirements.
Residential Building: Residential projects can standardize on one nominal size while selecting different frame depths, colors, and glass packages across unit types, orientations, and climate exposure conditions.
Exterior: Exterior facade installations require verified wind and water resistance; the 5 KPa wind rating and 350 Pa water resistance provide a baseline for project compliance verification.
Villa: Villas benefit from extensive customization options including wood grain finishes, irregular layouts, and premium glass upgrades that support architectural individuality, performance demands, and distinctive exterior aesthetics.
Inquiry Guidance
To request a quote, please share your project location, required size, quantity, preferred frame color, glass type, hardware requirements, and drawings or reference photos if available.
FAQ
How do I get a quote for the 28 x 48 casement window?
Provide final drawings, model series (WY-72/86/100), glass package, color, hardware, and screen selections. DERCHI confirms pricing after drawing review; indicative tiers exist but require verification per order.
What customization options are available?
Frame depth (72/86/100 mm), glass type, color, layout, hardware, and screen options are customizable. Opening panel range is W450-800 mm x H600-1500 mm. Confirm final layout depends on operation side and screen selection.
What is the typical lead time?
Indicative lead time ranges from 25 to 35 days depending on order quantity and customization scope. Confirm exact delivery schedule with DERCHI per order after drawing approval.
What certifications are available?
DERCHI official pages reference global certifications including NFRC, CE, AS2047, CSA, and ISO9001. Confirm applicability for the specific WY series and target market before specifying in project documents.
How are windows packaged for export?
Export packaging includes wooden-frame packaging, protective tape, pallet fixing, plastic belts, PE films against sea water, and air bags between pallets for safe international sea freight.
What is the minimum order quantity?
Indicative MOQ references exist but must be confirmed with DERCHI per project. Made-to-size customization is available; confirm MOQ alongside final quotation, delivery terms, and packaging requirements.
How do I verify performance ratings meet local codes?
Review U-Factor, SHGC, wind, water, and air ratings against local building codes. Confirm which glass configuration each rating applies to and whether upgrades are needed for compliance.
