Weathertight Folding Door Testing, Engineering & Energy Information

Standard DP35 System

Texas Department of Insurance approval #DR-391. Report available here.

Florida Build Code Approval number 13687.

The system tested used Aluminum Clad Doors in our Aluminum Frame. Configuration was a 1L5R using 36" x 95" Doors with 1 lite Low E IG glass.

Structural Test

ASTM E330 - DP35

A copy of the full test report is available as a download here.

Design Pressure Chart

To achieve DP ratings up to DP59, we have had comparative engineering done on other door panel sizes.

Maximum design pressure capacity chart (psf)
Panel Height
(in.)
Panel Width (in)
24.0 30.0 32.0 36.0
Pos Neg Pos Neg Pos Neg Pos Neg
80.0 59.6 59.6 49.9 49.9 47.5 47.5 43.6 43.6
95.3 48.7 48.7 40.4 40.4 38.4 38.4 35.0 35.0

A copy of the engineering anaylsis report is available as a download here.

Water Infiltration

ASTM E547 - Passed

Air Infiltration

ASTM E283 - 0.04 cfm/sq.ft.

A copy of the full test report is available as a download here.

If you need a new label for your door stating these results, it is available here.

Energy Values

All door systems will have the same Air Infiltration value if all of the weather stripping is installed per the drawings and instructions.

U-Values and Solar Heat Gain values will be affected by the type of door panel chosen for the system. A chart with these values per door panel type is below:

Door Panel Type
U-Value
Solar Heat Gain
Fir Door w/272 .38 .26
Fir Door w/366 .34 .22
Fiberglass .29 .26
Aluminum Clad .37 .22
Custom Wood .34 .22

Aluminum Clad Cardinal 366 Low E insulated glass
Custom Wood  Cardinal 366 Low E insulated glass
Fiberglass   Cardinal 272 Low E insulated glass
Fir Doors Cardinal 272 Low E insulated glass
Cardinal 366 available as an upgrade

Other glass types are available