Instructions / Assembly
EXTERIOR FRAMING
The technical content of this literature is eective 5/31/12 and supersedes all previous information. Pub. No. CD-Full Line 5/12
clarkdietrich.com
DOOR AND WINDOW FRAMING
39
RedHeader R O J A M B
As part of the RedHeader RO 
system, the jamb eliminates capped 
members, allowing drywall screws 
to drive through only one thickness 
of material. Plus, the open jamb 
does not require pre-insulating. 
RedHeader RO Extra-Duty jambs 
have a longer 3-1/2" flange for 
wider spans.
Standard jambs 
Product code
Thickness
ksi Depth (in) Flange (in) Return (in)
Gauge Mils
Design 
thickness 
(in)
JAMB
18 43 0.0451 33
3-5/8
3 7/8
4
6
8
16 54 0.0566 50
3-5/8
3 7/8
4
6
8
14 68 0.0713 50
3-5/8
3 7/8
4
6
8
12 97 0.1017 50
3-5/8
3 7/8
4
6
8
All material CP60.
Extra-Duty jambs
Product code
Thickness
ksi Depth (in) Flange (in) Return (in)
Gauge Mils
Design 
thickness
(in)
JAMB
16 54 0.0566 50
3-5/8
3-1/2 7/8
4
6
8
14 68 0.0713 50
3-5/8
3-1/2 7/8
4
6
8
12 97 0.1017 50
3-5/8
3-1/2 7/8
4
6
8
All material CP60.
RedHeader RO Drop ’N Lock™ CLIP
Prepunched slots allow for vertical 
field adjustments before fully 
attaching the clip to the RedHeader 
RO jamb stud. The narrower header 
and clip width reduce material 
buildup that pushes the gypsum 
board out, eliminating additional 
corner bead and taping costs.
Product code
Thickness
ksi
Depth (in) Height (in)
Pcs./Box
Gauge Mils
Design 
thickness 
(in)
DNLC683
14 68 0.0713 50
3-5/8 3 24
DNLC684 4 3 24
DNLC686 6 3 24
DNLC688 8 3 16
All material G90.
One RedHeader RO jamb stud
(1) RedHeader RO jamb stud: 
No track or screws required  
to build up sections
Replaces
Typical jamb with: 
(2) 1-5/8" flange studs & (1) track  
w/ (4) screws at 16" o.c.










