Win-Dor's Hybrid Folding Doors Open the Outside In

Strong, Affordable, Reliable and Time Tested

Hybrid Exterior Folding Door Technology - Exclusively from Win-Dor

Win-Dor's Hybrid Folding Doors Open the Outside In

3-Panel Demonstrationfolding_door_demo_videob

Unlike other manufacturers who solely use aluminum, vinyl or wood when manufacturing their folding door systems, Win-Dor has combined both vinyl and aluminum to offer our customers something special.

The positives and negatives of an all aluminum folding door system

Aluminum is a great material for bifold door systems. It is strong and rigid. It allows for larger sized installations vs. the traditional vinyl bifolding door system. At the same time, there are several drawbacks to a standard aluminum door system. Just like aluminum windows, it eventually corrodes and breaks down. Secondly, aluminum is great at transferring energy. Because of this, an aluminum bifold system will not be as energy efficient.

The positives and negatives of an all vinyl folding door system

Vinyl is also a great material for bifold door systems. Unlike aluminum, vinyl will never crack or peel. It won't corrode. In fact, vinyl bifold doors require very little maintenance. And just like vinyl windows, vinyl bifolds can be incredibly energy efficient.

But just like its aluminum counterpart, there are drawbacks with vinyl. A bifold door system made exclusively from vinyl doesn't have the same strength as an aluminum bifold door system. And because of this, the size of the opening is extremely limited, especially for larger residential and commercial applications.

The Win-Dor Folding Door Solution

Win-Dor makes an innovative, durable, low-maintenance folding door system that is considered among the highest quality bifold doors in America. But don't take our word for it, you can see the Performance and Testing results below.

Our unique blend of strong rigid aluminum framing with a long-lasting, low maintenance vinyl capping creates a unique combination not available from other manufacturers. And one which is also thermally improved.

Folding Door Technical Documents

Shop Drawings - Standard Size

3 Panel Configurations
[PDF] - 3750 Folding Door 9080 3.0.3
[PDF] - 3750 Folding Door 9080 3.1.2
[PDF] - 3750 Folding Door 9080 3.2.1
[PDF] - 3750 Folding Door 9080 3.3.0
[PDF] - 3750 Folding Door 10080 3.0.3
[PDF] - 3750 Folding Door 10080 3.1.2
[PDF] - 3750 Folding Door 10080 3.2.1
[PDF] - 3750 Folding Door 10080 3.3.0
4 Panel Configurations

[PDF] - 3750 Folding Door 12080 4.0.4
[PDF] - 3750 Folding Door 12080 4.1.3
[PDF] - 3750 Folding Door 12080 4.3.1
[PDF] - 3750 Folding Door 12080 4.4.0

5 Panel Configurations

[PDF] - 3750 Folding Door 12080 5.0.5
[PDF] - 3750 Folding Door 12080 5.1.4
[PDF] - 3750 Folding Door 12080 5.2.3
[PDF] - 3750 Folding Door 12080 5.3.2
[PDF] - 3750 Folding Door 12080 5.4.1
[PDF] - 3750 Folding Door 12080 5.5.0
[PDF] - 3750 Folding Door 15080 5.0.5
[PDF] - 3750 Folding Door 15080 5.1.4
[PDF] - 3750 Folding Door 15080 5.2.3
[PDF] - 3750 Folding Door 15080 5.3.2
[PDF] - 3750 Folding Door 15080 5.4.1
[PDF] - 3750 Folding Door 15080 5.5.0
[PDF] - 3750 Folding Door 16080 5.0.5
[PDF] - 3750 Folding Door 16080 5.5.0
6 Panel Configurations

[PDF] - 3750 Folding Door 18080 6.3.3P
[PDF] - 3750 Folding Door 18080 6.3P.3

7 Panel Configurations

[PDF] - 3750 Folding Door 18080 7.0.7
[PDF] - 3750 Folding Door 18080 7.1.6
[PDF] - 3750 Folding Door 18080 7.2.5
[PDF] - 3750 Folding Door 18080 7.3.4
[PDF] - 3750 Folding Door 18080 7.4.3
[PDF] - 3750 Folding Door 18080 7.5.2
[PDF] - 3750 Folding Door 18080 7.6.1
[PDF] - 3750 Folding Door 18080 7.7.0
[PDF] - 3750 Folding Door 21080 7.0.7
[PDF] - 3750 Folding Door 21080 7.7.0

Shop Drawings - Custom Size
Elevation Drawings

[PDF] - 3750 Folding Door Elevation View Complete Series
[DWG] - 3750 Folding Door Elevation View Complete Series
[DWG] - 3750 Folding Door Elevation View 3 Panel
[DWG] - 3750 Folding Door Elevation View 4 Panel
[DWG] - 3750 Folding Door Elevation View 5 Panel
[DWG] - 3750 Folding Door Elevation View 6 Panel
[DWG] - 3750 Folding Door Elevation View 7 Panel
[DWG] - 3750 Folding Door Elevation View 8 Panel

Configuration Drawings

[DWG] - 3750 Folding Door Configuration - Complete Series
[DWG] - 3750 Folding Door Configuration - 3 Panel
[DWG] - 3750 Folding Door Configuration - 4 Panel
[DWG] - 3750 Folding Door Configuration - 5 Panel
[DWG] - 3750 Folding Door Configuration - 6 Panel
[DWG] - 3750 Folding Door Configuration - 7 Panel
[DWG] - 3750 Folding Door Configuration - 8 Panel

Section Views

3 Panel with 1" Nail-fin

[PDF] - 3750 Folding Door 3.0.3 - 1" Nail-Fin
[DWG] - 3750 Folding Door 3.0.3 - 1" Nail-Fin
[PDF] - 3750 Folding Door 3.1.2 - 1" Nail-Fin
[DWG] - 3750 Folding Door 3.1.2 - 1" Nail-Fin
[PDF] - 3750 Folding Door 3.2.1 - 1" Nail-Fin
[DWG] - 3750 Folding Door 3.2.1 - 1"Nail-Fin
[PDF] - 3750 Folding Door 3.3.0 - 1" Nail-Fin
[DWG] - 3750 Folding Door 3.3.0 - 1" Nail-Fin

3 Panel with 1 3/8" Nail-fin

[PDF] - 3750 Folding Door 3.0.3 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 3.0.3 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 3.1.2 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 3.1.2 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 3.2.1 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 3.2.1 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 3.3.0 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 3.3.0 - 1 3/8" Nail-Fin

4 Panel with 1" Nail-fin

[PDF] - 3750 Folding Door 4.0.4 - 1" Nail-Fin
[DWG] - 3750 Folding Door 4.0.4 - 1" Nail-Fin
[PDF] - 3750 Folding Door 4.1.3 - 1" Nail-Fin
[DWG] - 3750 Folding Door 4.1.3 - 1" Nail-Fin
[PDF] - 3750 Folding Door 4.2.2 - 1" Nail-Fin
[DWG] - 3750 Folding Door 4.2.2 - 1" Nail-Fin
[PDF] - 3750 Folding Door 4.3.1 - 1" Nail-Fin
[DWG] - 3750 Folding Door 4.3.1 - 1" Nail-Fin
[PDF] - 3750 Folding Door 4.4.0 - 1" Nail-Fin
[DWG] - 3750 Folding Door 4.4.0 - 1" Nail-Fin

4 Panel with 1 3/8" Nail-fin

[PDF] - 3750 Folding Door 4.0.4 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 4.0.4 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 4.1.3 - 1 3/8" Nail-Fin
[DWG] -3750 Folding Door 4.1.3 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 4.2.2 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 4.2.2 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 4.3.1 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 4.3.1 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 4.4.0 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 4.4.0 - 1 3/8" Nail-Fin

5 Panel with 1" Nail-fin

[PDF] - 3750 Folding Door 5.0.5 - 1" Nail-Fin
[DWG] - 3750 Folding Door 5.0.5 - 1" Nail-Fin
[PDF] - 3750 Folding Door 5.1.4 - 1" Nail-Fin
[DWG] - 3750 Folding Door 5.1.4 - 1" Nail-Fin
[PDF] - 3750 Folding Door 5.2.3 - 1" Nail-Fin
[DWG] - 3750 Folding Door 5.2.3 - 1" Nail-Fin
[PDF] - 3750 Folding Door 5.3.2 - 1" Nail-Fin
[DWG] - 3750 Folding Door 5.3.2 - 1" Nail-Fin
[PDF] - 3750 Folding Door 5.4.1 - 1" Nail-Fin
[DWG] - 3750 Folding Door 5.4.1 - 1"Nail-Fin
[PDF] - 3750 Folding Door 5.5.0 - 1" Nail-Fin
[DWG] - 3750 Folding Door 5.5.0 - 1" Nail-Fin

5 Panel with 1 3/8" Nail-fin

[PDF] - 3750 Folding Door 5.0.5 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 5.0.5 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 5.1.4 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 5.1.4 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 5.2.3 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 5.2.3 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 5.3.2 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 5.3.2 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 5.4.1 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 5.4.1 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 5.5.0 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 5.5.0 - 1 3/8" Nail-Fin

6 Panel with 1" Nail-fin

[PDF] - 3750 Folding Door 6.0.6 - 1" Nail-Fin
[DWG] - 3750 Folding Door 6.0.6 - 1" Nail-Fin
[PDF] - 3750 Folding Door 6.1.5 - 1" Nail-Fin
[DWG] - 3750 Folding Door 6.1.5 - 1" Nail-Fin
[PDF] - 3750 Folding Door 6.2.4 - 1" Nail-Fin
[DWG] - 3750 Folding Door 6.2.4 - 1" Nail-Fin
[PDF] - 3750 Folding Door 6.3.3 - 1" Nail-Fin
[DWG] - 3750 Folding Door 6.3.3 - 1" Nail-Fin
[PDF] - 3750 Folding Door 6.4.2 - 1" Nail-Fin
[DWG] - 3750 Folding Door 6.4.2 - 1" Nail-Fin
[PDF] - 3750 Folding Door 6.5.1 - 1" Nail-Fin
[DWG] - 3750 Folding Door 6.5.1 - 1" Nail-Fin
[PDF] - 3750 Folding Door 6.6.0 - 1" Nail-Fin
[DWG] - 3750 Folding Door 6.6.0 - 1" Nail-Fin

6 Panel with 1 3/8" Nail-fin

[PDF] - 3750 Folding Door 6.0.6 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 6.0.6 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 6.1.5 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 6.1.5 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 6.2.4 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 6.2.4 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 6.3.3 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 6.3.3 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 6.4.2 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 6.4.2 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 6.5.1 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 6.5.1 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 6.6.0 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 6.6.0 - 1 3/8" Nail-Fin

7 Panel with 1" Nail-fin

[PDF] - 3750 Folding Door 7.0.7 - 1" Nail-Fin
[DWG] - 3750 Folding Door 7.0.7 - 1" Nail-Fin
[PDF] - 3750 Folding Door 7.1.6 - 1" Nail-Fin
[DWG] - 3750 Folding Door 7.1.6 - 1" Nail-Fin
[PDF] - 3750 Folding Door 7.2.5 - 1" Nail-Fin
[DWG] - 3750 Folding Door 7.2.5 - 1" Nail-Fin
[PDF] - 3750 Folding Door 7.3.4 - 1" Nail-Fin
[DWG] - 3750 Folding Door 7.3.4 - 1" Nail-Fin
[PDF] - 3750 Folding Door 7.4.3 - 1" Nail-Fin
[DWG] - 3750 Folding Door 7.4.3 - 1" Nail-Fin
[PDF] - 3750 Folding Door 7.5.2 - 1" Nail-Fin
[DWG] - 3750 Folding Door 7.5.2 - 1" Nail-Fin
[PDF] - 3750 Folding Door 7.6.1 - 1" Nail-Fin
[DWG] - 3750 Folding Door 7.6.1 - 1" Nail-Fin
[PDF] - 3750 Folding Door 7.7.0 - 1" Nail-Fin
[DWG] - 3750 Folding Door 7.7.0 - 1" Nail-Fin

7 Panel with 1 3/8" Nail-fin

[PDF] - 3750 Folding Door 7.0.7 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 7.0.7 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 7.1.6 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 7.1.6 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 7.2.5 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 7.2.5 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 7.3.4 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 7.3.4 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 7.4.3 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 7.4.3 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 7.5.2 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 7.5.2 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 7.6.1 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 7.6.1 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 7.7.0 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 7.7.0 - 1 3/8" Nail-Fin

8 Panel with 1" Nail-fin

[PDF] - 3750 Folding Door 8.0.8 - 1" Nail-Fin
[DWG] - 3750 Folding Door 8.0.8 - 1" Nail-Fin
[PDF] - 3750 Folding Door 8.1.7 - 1" Nail-Fin
[DWG] - 3750 Folding Door 8.1.7 - 1" Nail-Fin
[PDF] - 3750 Folding Door 8.2.6 - 1" Nail-Fin
[DWG] - 3750 Folding Door 8.2.6 - 1" Nail-Fin
[PDF] - 3750 Folding Door 8.3.5 - 1" Nail-Fin
[DWG] - 3750 Folding Door 8.3.5 - 1" Nail-Fin
[PDF] - 3750 Folding Door 8.4.4 - 1" Nail-Fin
[DWG] - 3750 Folding Door 8.4.4 - 1" Nail-Fin
[PDF] - 3750 Folding Door 8.5.3 - 1" Nail-Fin
[DWG] - 3750 Folding Door 8.5.3 - 1" Nail-Fin
[PDF] - 3750 Folding Door 8.6.2 - 1" Nail-Fin
[DWG] - 3750 Folding Door 8.6.2 - 1" Nail-Fin
[PDF] - 3750 Folding Door 8.7.1 - 1" Nail-Fin
[DWG] - 3750 Folding Door 8.7.1 - 1" Nail-Fin
[PDF] - 3750 Folding Door 8.8.0 - 1" Nail-Fin
[DWG] - 3750 Folding Door 8.8.0 - 1" Nail-Fin

8 Panel with 1 3/8" Nail-fin

[PDF] - 3750 Folding Door 8.0.8 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 8.0.8 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 8.1.7 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 8.1.7 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 8.2.6 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 8.2.6 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 8.3.5 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 8.3.5 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 8.4.4 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 8.4.4 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 8.5.3 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 8.5.3 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 8.6.2 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 8.6.2 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 8.7.1 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 8.7.1 - 1 3/8" Nail-Fin
[PDF] - 3750 Folding Door 8.8.0 - 1 3/8" Nail-Fin
[DWG] - 3750 Folding Door 8.8.0 - 1 3/8" Nail-Fin

Wall Detail Drawings

1" Nail-Fin

[PDF] - .75" Sleeper Sill
[DWG] - .75" Sleeper Sill
[PDF] - 1.5" Sleeper Sill
[DWG] - 1.5" Sleeper Sill
[PDF] - ADA Sill
[DWG] - ADA Sill

1 3/8" Nail-Fin

[PDF] - .75" Sleeper Sill
[DWG] - .75" Sleeper Sill
[PDF] - 1.5" Sleeper Sill
[DWG] - 1.5" Sleeper Sill
[PDF] - ADA Sill
[DWG] - ADA Sill

3750 Folding Door Rough Opening Specification Detail

[PDF]3750 Folding Door Rough Opening Specification Detail

Downloadable Documents

Hardware Options

Handles

Shoot Bolts

Hinges

Door Catches

Color Options

Vinyl and Paint Color Options

Structural Test Result: PG30 (Performance Grade 30)
Test Standard: AAMA/WDMA/CSA 101/1.S.2/A440-08
Unit Tested: 5.5.0 - 5 Panel Outswing, 143 1/2" x 95 1/2"

  Tested at Measured Allowed
Air Infiltration - ASTM E283-04 1.57 PSF (25 mph) .10 CFM/ft² 0.30 CFM/ft²
Air Exfiltration - ASTM E283-04 1.57 PSF (25 mph) .09 CFM/ft² 0.30 CFM/ft²
Water Resistance - ASTM E547-00 4.59 psf No Leakage No Leakage
Uniform Load Deflection - ASTM E330-02 30.08 psf (108 mph) 0.659" Positive No Damage
0.695" Negative No Damage
Uniform Load Structural Test - ASTM E330-02 45.11 psf (132 mph) .012 inches .37 inches
Forced Entry Resistance - AAMA 1304-02 Test A, B, & C No Entry No Entry
Operation / Cycle Performance - AAMA 920-11 100,000 Cycles Pass Pass
Dual Glazed Thermal Test Results
U-Factor SHGC VT Overall IG Thickness Insulated glass unit as tested
0.36 0.19 0.42 0.875" 3mm Cardinal 366 / Argon / 3mm Clear
0.35 0.19 0.41 0.875" 4mm Cardinal 366 / Argon / 4mm Clear
0.32 0.18 0.41 0.875" 3mm Cardinal 366 / Argon / 3mm Cardinal I89
0.32 0.18 0.40 0.875" 4mm Cardinal 366 / Argon / 5mm Cardinal I89
Triple Glazed Thermal Test Results
U-Factor SHGC VT Overall IG Thickness Insulated glass unit as tested
0.29 0.17 0.37 1.25" 3mm Cardinal 366 / Argon / 3mm Clear / Air / 3mm Cardinal I89
0.29 0.17 0.37 1.25" 3mm Cardinal 366 / Argon / 3mm Clear / Argon / 3mm Cardinal I89
0.29 0.17 0.30 1.25" 3mm Cardinal 366 / Argon / 3mm Clear / Air / 3mm Cardinal 366
0.28 0.16 0.30 1.25" 3mm Cardinal 366 / Argon / 3mm Clear / Argon / 3mm Cardinal 366