CRL-U.S. Aluminum 4" Split Mullion Screw Spline Black Anodized 24'2"

• 6063‑T6 alloy and temper
• Stock and custom lengths available
• Clear and bronze black anodized finishes
• Used with CW240 female split mullion
• Duranar® and Duranar® Sunstorm® color coatings on request

CRL‑U.S. Aluminum Extrusions are made in the U.S.A. to the exacting standards you expect from the leader in aluminum architectural systems. Sections are engineered for tight fit and structural integrity, delivering an aesthetically superior aluminum extrusion for curtain wall and mullion cover applications. Stock lengths and standard finishes are available; we also provide custom finishes and special cut‑to‑size lengths to meet project requirements. SKU: CW24922.

Over the years U.S. Aluminum has produced hundreds of custom extrusions to meet specific job needs — from rounded center glaze sills to extended curtain wall face caps. If it can be extruded, we’ve likely done it. NOTE: Custom extrusions may be subject to minimum order quantities and die charges; details will be provided in your quote.

Looking for a 6063‑T6 aluminum mullion cover with anodized or Duranar® finish? Contact CRL for a quote on SKU CW24922 and custom cut‑to‑size options.