Product Info Catalog Building Materials Windows Screen Accessories 3-1/2-Inch x 8-Ft. Black Screen Tight Base 3-1/2-Inch x 8-Ft. Black Screen Tight Base Request a Quote UPC: 731677350005 Manufacturer: Screen Tight SKU: 182524 Model Number: BASE38 3-1/2" x 8' Black Screen Tight Base, Attaches To 4 x 4 Wooden Frame, Screen Spline Rolls Into The Spline Groove, Cap Snaps Onto Base.