A rectangular molding, usually 3/4 by 13/8 or more in width, used in the assembly of a window frame. Serves as a stop for storm and screen or combination windows and to resist air infiltration.
A rectangular molding, usually 3/4 by 13/8 or more in width, used in the assembly of a window frame. Serves as a stop for storm and screen or combination windows and to resist air infiltration.