The 93 Thermal Break Series Folding Door is an aluminum soundproof accordion door built with a 14.8mm thermal break strip and 27A hollow glass for effective insulation. Its upper-hung, lower-slide structure ensures smooth operation for large openings.
Aluminum thermal break folding door with 5+27A+5 hollow glass
Upper-hung and lower-slide structure with balance bearings
Reinforced center column and even-panel design for stability
Suitable for B2B projects and buyers seeking a soundproof accordion door manufacturer
This door carries its weight from the top track, leaving the bottom to guide rather than bear the load. The 14.8mm thermal break strip and 5+27A+5 hollow glass work together to limit heat transfer across the profile. Between the panels, a reinforced center column distributes force toward the door's center point—an approach that directly addresses wind pressure in wider installations.
When closed, all hinges tuck out of sight for a flush face. Balance bearings inside those hinges cut friction so panels glide with less effort, and the even-panel recommendation prevents the sagging that odd-panel layouts tend to develop. Two track profiles are available: a high track for clearance needs and a water-blocking low track for moisture-prone sites.
Product Features
14.8mm Thermal Break Strip: A wide thermal barrier inside the profile that cuts energy transfer and helps stabilize interior temperatures.
27A Hollow Glass: The 27mm air gap between panes restricts heat flow and can dampen outside noise, depending on the final glazing choice.
Upper-Hung Lower-Slide Structure: Suspends door weight from the top track, so the lower track only guides—making panels easier to move.
Hidden Hinges with Balance Bearings: Hinges disappear on closure for a clean look; built-in bearings keep sliding smooth.
Reinforced Center Column: Anchors the panel assembly and concentrates force at the center, raising wind pressure resistance.
Even-Panel Anti-Sag Design: Even-numbered panel layouts avoid the sagging common to odd-panel folding doors, extending service life.
Customizable Styles
Glass Configuration: Standard 5+27A+5 hollow glass, or upgrade to 27A electric blinds for adjustable light and privacy.
Track Options: High track (approx. 48mm/63mm tall) for clearance, or water-blocking low track (approx. 18mm/33mm tall) for drainage control.
Panel Dimensions: Single panels from 500mm to 850mm wide and 1000mm to 3800mm high; confirm overall assembly sizes with the manufacturer.
Grid Bars: Optional 25×25 grid bars inside the hollow glass to match architectural styles.
Bottom Guard Plate: Optional door panel bottom guard plate for added physical protection at the lower edge.
Hardware Accessories
Hidden Hinges: Adjustable and fully concealed when the door closes, keeping the profile clean.
Balance Bearings: Built into the hinges to reduce friction and support smoother panel travel.
Key Lock Cylinder: Standard security locking on the active panel; confirm hardware brand options with the factory.
Reinforced Center Column: Sits between panels to improve structural stability and wind load distribution.
Upper Track Profile: 2.5mm wall thickness (4.316kg/m) to support the suspended panels.
Basic Parameters
Performance Item
Available Information
Buyer Notes
Thermal Insulation
14.8mm thermal break strip and 27A hollow glass
Request certified thermal test reports for project compliance.
Wind Pressure Resistance
Reinforced center column and even-panel design
No specific wind load rating provided; request test data for structural approval.
Water Tightness
Water-blocking low track option available
Confirm water tightness class with manufacturer for specific exposure conditions.
Air Tightness
Hollow glass and thermal break profiles
Request certified air permeability test reports for compliance.
Sound Insulation
27A hollow glass configuration; acoustic rating not provided
Request certified acoustic test reports before relying on soundproof claims.
Product Specifications
Parameter
Detail
Product Name
93 Thermal Break Series Folding Door
Product Type
Thermal break aluminum folding door
Standard Glass
5+27A+5 / 5G+27A+5G hollow glass
Hollow Layer
27A
Thermal Break Strip Width
14.8mm
Main Profile Wall Thickness
2.0mm
Panel Width Range
500mm - 850mm (single panel)
Panel Height Range
1000mm - 3800mm (single panel)
Upper Track Wall Thickness
2.5mm
Grid Bar Model
25×25 (optional)
Opening Style
Upper-hung, lower-slide folding
Overall Door Dimensions
Depend on panel count; confirm with manufacturer
Surface Treatment
Available upon consultation
Advantages
Structural Stability: Reinforced center column and even-panel layout work together to resist sagging and wind pressure.
Smooth Operation: Balance bearings and adjustable hinges cut friction, keeping sliding consistent over time.
Project Adaptability: Dual track options and electric blind upgrades allow configuration for varied architectural and environmental needs.
Precise B2B Costing: Detailed profile weights and wall thicknesses give procurement teams the data needed for accurate project estimation.
Clean Aesthetics: Hinges are fully hidden when the door is closed, resulting in an uninterrupted, flush surface.
Application Scenarios
Apartment: Folding operation saves floor space in compact layouts, while the hollow glass may help reduce street noise entering living areas.
Home Office: The 27A hollow glass configuration provides a buffer against external distractions, aiding concentration in a work-from-home setting.
Hotel: Hidden hinges deliver a refined visual finish for guest rooms, and the smooth balance-bearing operation ensures quiet, effortless access.
Office Building: Configurable panel dimensions and the reinforced center column allow large interior partitions that withstand high-traffic commercial environments.
Outdoor: The water-blocking low track option manages rain exposure; buyers must confirm weather resistance and drainage capacity for the specific site.
Residential Building: A 14.8mm thermal break strip limits heat transfer, contributing to more consistent indoor temperatures across seasonal changes.
Exterior: The reinforced center column distributes wind load, but buyers should verify wind pressure ratings and surface finish durability against local climate conditions.
Villa: Panels reaching up to 3800mm in height accommodate expansive openings, and the electric blind upgrade offers integrated light control for sunrooms or terraces.
FAQ
What is this product?
A 93-series thermal break aluminum folding door with an upper-hung, lower-slide structure, 14.8mm thermal break strips, and 27A hollow glass.
Where can it be used?
Residential and commercial openings requiring folding operation—apartments, hotels, villas, office partitions—provided project dimensions fall within panel ranges.
Can it be customized?
Yes. Track types, electric blind upgrades, 25×25 grid bars, and panel dimensions within the verified ranges can all be specified during consultation.
What information is needed for a quote?
Opening dimensions, preferred panel count, track type, glass configuration, and project location. Clarify whether dimensions refer to single panels or total assemblies.
Can it be used for B2B projects?
Yes. Detailed profile weights support accurate costing, and explicit configuration limits—like the even-panel recommendation—help prevent order errors in large-scale procurement.
Are technical documents available?
An R&D product manual with profile specifications is available. Certified test reports for acoustic, thermal, and structural performance must be requested separately.
What should buyers confirm before ordering?
Use an even-numbered panel layout, note that upper fixed glass cannot be configured, and verify whether dimensions refer to single panels or total assemblies.
How should buyers confirm certification, packaging, shipping, or compliance details?
Request specific acoustic, wind, and water test reports from the manufacturer. Packaging and shipping terms should be confirmed per order during the quotation process.
Project Cases for Custom Door and Window Solutions
Address: Building 19, Shenke Chuangzhi Park, No. 6 Xingye East Road, Shishan Town, Nanhai District, Foshan City China
DERCHI window and door is one of top 10 windows and doors in China. We are professional high quality aluminum doors and windows manufacturer with professional team for more than 25 years.