CRL-U.S. Aluminum TW56633 4" Sill Mullion for Panel Assembly, Black Anodic- 24'-2" Stock Length

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. Specific sections are designed to fit together tightly, assuring structural integrity while also providing an aesthetically superior appearance. Stock lengths are available in standard finishes, and we can also provide custom finishes that meet the requirements of your project. Special cut-to-size lengths can also be quoted in standard and custom finishes. Over the years U.S. Aluminum has created hundreds of custom extrusions to satisfy specific job r