Frame Colors & Finish Options
Choose from modern, durable powder-coated finishes designed to complement any aluminum bifold door project.
Matte Black
Sleek, modern finish that frames glass like a picture and works with most exterior palettes
Matte Coffee
Warm architectural grey-brown for traditional, transitional, or earthy modern designs
White
Clean, bright finish that blends with stucco, siding, and light interiors
Custom RAL colors
Choose from a multitude of different shades and hues by deciding on RAL color standard
Our finishes are engineered for exterior performance, featuring durable coatings that resist fading, peeling, and corrosion in all climates.
RAL
Custom
Need something specific?
Custom RAL colors available for matching your design. Click Here
Trusted by Homeowners, Architects & Builders Across USA
Nationwide Shipping (All 50 States)
Custom Sizes & Configurations
Thermal Break Aluminum System
Energy-Efficient Low-E Glass
Better comfort & insulation
Bifold Door Configurations
Choose from range of bifold door configurations, including various panel options and stack directions available.
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Custom Aluminum Bifold Doors
Shipping to All 50 States
Premium folding glass wall systems designed for modern homes and commercial spaces.
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• 6063-T5 Aluminum
• Frame depth: 3"
• Panel depth: 2-1/2"
• Frame width: 1-3/8"
• Panel width: 1-3/4"
U-Value 0.3
Multi-point locking system
Air Leakage 0.3
Optional low or integrated thresholds
Bottom-loaded steel hardware
Water Tightness 550 Pa - Level 6
Wind Resistance 4000 Pa - Level 7
Sound Insulation 36 dB - Level 7
Aluminum Frame & Construction
Category Value / Rating
Glazing System
• Standard - 1" Double Glazing with Argon gas
• Low-E
• Tempered & tinted glass available
Sizing & Engineering
• Max panel weight: 300 lbs
• Max panel size: 3 ft W × 11.8 ft H
Finish Options
• Powder-coated
• All RAL colors available
• Wood-grain thermal film applications
Performance Specifications
Smart lock
Keys / Fob / Fingerprint / Code
hardware set
Standard hardware set item types.
Material: Steel / Finish: Powder Coating
Finish color
Black / Silver
Hardware & Handles
Choose from selection of contemporary handle options for your aluminum bifold door
Professional Installation & Warranty
10-Year Limited Warranty
We stand behind every bifold door system with a comprehensive multi-part warranty:
• 10 years on aluminum frame
• 5 years on finish
• 3 years on glazing
• 3 years on hardware
Professional Installation
Our certified installation partners ensure your bifold system operates flawlessly from day one.
• Nationwide installation options (local & partner teams available)
• Precision alignment for smooth folding operation
• Weather-tight sealing & system calibration
• Full start-to-finish support (measurement → delivery → installation)
DIY Installation Support
Prefer to install yourself? We make it simple:
• Installation manual included
• Phone & video support available
• Guidance for proper calibration and panel leveling
Nationwide Shipping
• Fast shipping to all 50 states
• Transparent lead times (manufacturing + delivery)
• Secure packaging to prevent damage during transit
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Smooth
Rolling
Wide Spans
Black
Mesh
Insect
Protection
Screen Options
For natural ventilation without unwanted insects, add a retractable screen to your bifold door.
Customer Projects & Gallery
See how Cornerstone bifold doors transform homes across the USA.
Luxury Windows & Doors • Fast, Accurate Pricing
Tell us about your project and our team will send a personalized quote within 24–48 hours.
