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www.NabcoEntrances.com
GT208300-8350OverheadConcealedOperatorInstallationManual
Rev 8-31-16
P/N C-00183
Figure 6 Secure Bottom Load Header to Jamb Tubes
DN 0448
Jamb Tube
Header
SECTION 5 .3 Install the Frame to Building
Note: It is recommended to pull incoming 120 VAC Power wires through the end of Header for a single Swing door or the
middle of Header for a simultaneous pair Swing door. It is also recommended to install wires into an Electrical conduit.
Note: It is recommended to countersink holes as required to flush the surface.
Note: It is recommended to drill tap threads for anchors in a steel or aluminum structure.
1. Lift to position the assembled Frame into the rough opening. Insert all incoming wiring through the 1-1/4 inch hole located
on side of Header.
2. Plumb Jamb tubes in both planes to ensure the rough opening allows a 1/4 inch clearance. Shim back of Jamb as required.
1/4” Shim and plumb
for proper clearance
DN 0758
Jamb Tube
Horizontal
Transom
1/4” Shim and plumb
for proper clearance
Figure 7 Shim back of Jamb
5 .3 .1: Anchor Placement for Jamb Tubes
Use 1/4 inch diameter anchors with a minimum of 3 per Jamb Tube, maximum is 48 inches on center. Drill 1/4 inch diameter holes in
the face of Jamb and then countersink each hole. Anchors and Fasteners must be appropriate for the type of structure being fastened
into. Anchors and Fasteners are not provided by NABCO.
Figure 8 Anchor Placement
DN 0402
36” max
48” max
48” max
Y
Y
Y
Y
Y
Y
3. Secure the Frame with Fasteners not provided by NABCO.
Figure 9 Screw Anchors
DN 0658
1/4” Fasteners
1/4” Anchor Hole(s)