This 20' all-aluminum smart gutter screen fits standard 5" gutters. Kit includes five 4' panels, 35 panhead screws and installation instructions. Installation is easy. STEP 1- Align smart screen panel with the front edge of the gutter and fasten smart screen panel at the front with a supplied panhead screw into the recessed hole; STEP 2- Fasten rear of smart screen panel to the fascia using a supplied panhead screw; and STEP 3 - Overlap smart screen panels using the cut-out guides at the end of each panel. Done.