Center Mullion Stile Trim Transom Unit New Style PVC 60" Length

Price: $64.88
SKU: bbrp-CM60

BiltBest Window Upgrade Part – PVC Center Mullion Trim Cap (Replacement)
Maximum Length: 60" (cut‑to‑fit)
Material: PVC – rot‑proof, durable, modern replacement
Common Name: Casement Window Vertical Center Mull

This upgraded replacement part serves as the center stile mullion trim cap for BiltBest casement window systems. The new version is manufactured in PVC, providing long‑term durability and eliminating issues associated with wood rot or aging original materials. Each unit is supplied in a maximum finished length of 60", allowing you to cut it to the exact height required for your specific casement window application.

The center mullion (or vertical center mull) is the structural and visual divider between paired casement window units. Traditionally, a mullion provides support for the glazing system and may also carry structural load from the sash or the frame above. When used with glazing, mullions work in combination with horizontal elements known as transoms.

In door and commercial applications, the term floating mullion may refer to an interlock profile installed between double swing doors—however, in this context, the part is specifically designed for BiltBest casement window center mullion trim replacement.

$64.88