The size of the window is measured on the jamb of the window. In this example the call size of the window is 14x21.
Rough Opening Size
The size opening you will need to mount your new window.
Flush Mount: Mounts flush with the outside of the building.
Recessed Fin (J-Channel): Built in J-Channel typically used with Vinyl or Metal Siding.
External: Mounted on the outside of the glass (Standard on single pane shed windows)
Internal (GBG): Built between 2 pieces of glass (Typical of any "insulated" windows)
Brown / White / Black | If your size and color combo is not available online, please email us. We'd be glad to order it in for you.