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Aluminum Bifold Door Specifications

System Overview

Cornerstone aluminum bifold doors are engineered for large architectural openings, delivering smooth operation, structural strength, and clean modern sightlines.

Maximum Panel Sizes

  • Max panel height: 11.8 ft

  • Max panel width:   3 ft

  • Max panel weight: 300 lbs

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Frame Construction

  • Thermally broken aluminum frames

  • High-strength structural profiles

  • Powder coated finishes

2 Panel

​

  • 2-0

  • 0-2

3 Panels

​

  • 2-1

  • 1-2

  • 3-0

  • 0-3

5 Panels 

​

  • 5-0

  • 0-5

  • 3-2

  • 2-3

  • 4-1

  • 1-4

4 Panel

​

  • 4-0

  • 0-4

  • 3-1

  • 1-3

  • 2-2

6 Panels 

​

  • 6-0

  • 0-6

  • 5-1

  • 1-5

  • 3-3

Configuration Options

7 Panels

​

  • 7-0

  • 0-7

  • 6-1

  • 1-6

8 Panels

​

  • 8-0

  • 0-8

  • 4-4

  • 7-1

  • 1-7

9 Panel

​

  • 9-0

  • 0-9

  • 5-4

  • 4-5

10 Panels

​

  • 9-1

  • 1-9

  • 5-5

  • 10-0

  • 0-10

Glass Options

  • Double glazing

  • Triple glazing

  • Low-E coatings

  • Tempered or laminated safety glass

Performance Specifications

4000 Pa
Level 7

Wind Resistance

36 dB
Level 7

Sound Insulation

0.3
 

U-Value

550 Pa
Level 6

Water Tightness

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