The AP Products Black Gutter/Awning Rail features a slot for attaching your Dometic or Carefree vinyl fabric awning and adds a rain gutter that channels water away from the awning. It is used to attach a slide-out, patio, or window awning to your RV's side wall. This insert molding features a channel that accepts a vinyl insert (sold separately) for covering the screw heads. The molding is made from aluminum and is powder coated white. Aluminum moldings do not rust. These moldings attach with screws, require sealing tape, and optional caulking.• Material: Aluminum• Color: Black• Length: 16'• Dimensions: 1-3/4"H x 1"D• "C" Channel Opening: 1/4"• "C" Channel I.D.: 3/8" Used to attach a slide-out, patio, or window awning to your RV's side wall Made from powder-coated aluminum Attach with screws, requires sealing tape & optional caulk (not included) | AP Products 021-56302-16 RV Insert Gutter/Awning Rail, Black, 16'