The Windgate Jamb Extensions


Overall Wall Thickness Jamb Extension Pine or maple Poplar or primed poplar Oak White PVC composite board Tan PVC composite board
(a) (b)          
4 – 9/16″ 2 – 1/2″
6 – 9/16″ 4 – 1/2″
Custom wall up to 6-9/16″ Varies
Custom wall  over 6-9/16″ Varies

Custom wall = any wall thickness other than 4-9/16″ or 6-9/16″
Over 6-9/16″: Consult factory for availability
The jambs will extend to and be even with bottom of the window.

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