Screen Tight Screen Base 1-1/2", 1-1/2" X 8', 3/16", 8" Aluminum Black Bulk Size: 1-1/2" x 8' Nails or screws to framing Prepunched on 8" centers Takes 3/16" (.185) spline- (Catalog ID: 40182214, 40182284, 40179985) Takes 1-1/2" cap (Catalog ID: 40764791)