*Prefinished Oak S4S is stained to compliment our woodgrain windows.”5″>Over 6-9/16″:

Maximum Wall Thickness =  8-1/16″ for all Wood Species  

Maximum Wall Thickness =  11-5/16″ for White Unfinished Composite.<br

 Maximum Wall Thickness =  7-9/16″ for Prefinished White and Prefinished Tan.


Note: Any extension jamb damage needs to be reported within 24hrs by the distributor from receiving the product or it will not be covered under warranty. Once the product is picked up by a contractor, delivered to the Jobsite, or after installation, extensions are not covered by the labor warranty.