var addthis_config = {ui_language: 'en'};

Frame Specifications

 

Frames (Flat - Neutral Pressure)

Description 20 Min* 45-Min** 60-Min** 90-Min**
Max single frame size 4' x 9' 4' x 9' 4' x 9' 4' x 8'
Max paired frame size 8' x 9' 8' x 9' 8' x 9' 8' x 8'
Min frame depth 3 3/4" 4 5/8" 4 5/8" 4 7/8"
Wood species W. Pine or denser Any Any Any
Min stop height 5/8" 5/8" 5/8" 5/8"
Min stop width 1 1/2" 1" 1" 1"
Min casing size (width) 1 7/8" 1 5/8" 1 5/8" 1 5/8"
Min casing size (at shim) 3/8" 5/16" 5/16" 5/16"
Wood species of casing Any Any Any Any
4-sided Sidelite frames 3' x 9' N/A N/A N/A
4-sided Transom frames 8' x 3' N/A N/A N/A
Borrowed Sidelite frames 1'6" x 7' N/A N/A N/A
Borrowed Transom frames N/A N/A N/A N/A

* U.L. Rating for 20-minute jamb

**Warnock-Hersey Rating for 45-60-90 minute jamb

 

Frames (Flat - Positve Pressure)***

Description 20 Min* 45-Min** 60-Min** 90-Min**
Max single frame size 4' x 9' 4' x 9' 4' x 9' 4' x 8'
Max paired frame size 8' x 9' 8' x 9' 8' x 9' N/A
Min frame depth 3 3/4" 4 5/8" 4 5/8" 4 7/8"
Wood species W. Pine or denser Any Any Any
Min stop height 5/8" 5/8" 5/8" 5/8"
Min stop width 1 1/2" 1 1/2" 1 1/2" 1 1/2"
Min casing size (width) 1 7/8" 1 5/8" 1 5/8" 1 5/8"
Min casing size (at shim) 3/8" 5/16" 5/16" 5/16"
Wood species of casing Any Any Any Any
4-sided Sidelite frames 3' x 9' N/A N/A N/A
4-sided Transom frames 8' x 3' N/A N/A N/A
Borrowed Sidelite frames 1'6" x 7' N/A N/A N/A
Borrowed Transom frames N/A N/A N/A N/A

* U.L. Rating for 20-minute jamb

** Warnock-Hersey Rating for 45-60-90 minute jamb

***3 Positive Pressure options: (1) concealed in frame, (2) applied to frame, (3) category A door