Modern Windows

The round jamb extension is designed to extend the standard 4-9/16" jamb to 6-9/16" for thicker wall. The item is made of moulded polyurethane foam, same material as the window. The visible surfaces of the jamb extension have a deep embossed wood grain texture. The material is ready to paint or stain and will match the interior of either the Cabin Light Brickmold Round Window or the Rambler Clad Profile Round Window. The product can be cut to meet the exact wall thickness desired and nailed just like wood to attach to the window and is impervious to moisture and insects. Product dimensions: O.D. 23-11/16" x 23-11/16" x 2" Deep.