Casement Parts

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.

This OEM‑style center stile mullion trim cap is manufactured in new‑style PVC, providing long‑term durability that will not rot or deteriorate. Each unit comes in a 48-inch length, designed to be cut to your required finished height for casement window applications.

This component is commonly known as the vertical center mull for casement windows and serves as the trim/mullion piece for transom or center stile assemblies.

PVC Replacement Center Mullion Trim Cap This OEM‑style center stile mullion trim cap is the correct replacement part for BiltBest casement window units. It is manufactured in durable PVC, which will not rot or deteriorate over time.

Each piece is 84 inches long and designed to be cut to fit casement window units up to 76 inches in inside clear glass height. This component is commonly known as the vertical center mull for BiltBest casement windows.

Truth Maxim Series Dyad Operators - Right and Left Handing All Finishes.