Wood Sash Parts

This unit is used for field matching and field "fitment" as needed for on-site retro-fitting for numerous older wood casement windows from the 1970's, 1980's, 1990's and beyond 2000's - this unit ships in a 29" Overall Length. Casement Sill Stop Wood Cover Housing replacement part for many old wood casement windows. They come to you as an unfinished a-grade wood component, and we suggest you seal all sides. 

This center stile mullion trim cap is the correct replacement component for BiltBest casement window units. It is now manufactured exclusively in durable PVC, ensuring long‑term performance that will not rot or deteriorate.

Each unit is 72 inches long and designed to be cut to your required finished height for casement window assemblies up to 65 inches inside clear glass measurement. This part is commonly referred to as the vertical center mull for casement windows.