1MORE SUNLIGHT, MORE OUTPUT: Tilting design will get up to 50% more solar energy collection compared to horizontally mounted panels, which helps your solar panel generate more power in different seasons for optimum performance 2SUITABLE ROOF: Adjustable solar panel mounting bracket is supported by solar panels of most brands, designed for off grid solar systems and the maximum width of the solar panel is 41 inches. Can be used on RV, flat roofs, marine, boats, ground, garages, motorhomes, or other flat surfaces 3EASY INSTALLATION: Quick assembly with stainless steel fasteners and accurate hole placement. Only 4 steps are required to complete the installation of solar panels. 4LONG LASTING DESIGN: Adjustable solar panel tilt mount brackets are made of rustproof aluminum alloy, long lasting and endures all climate conditions, lightweight for portable design 5WHAT YOU CAN GET: The package contain 4 x aluminum mounting rails, 2 x aluminum tilt angle bracket, 6 x steel knob bolt, 6 x steel wing nut, 4 x steel flange nut, 4 x steel split lock washer, 4 x steel flat washer, 4 x steel hex bolt, 6 x steel self tapping screws Item Type: Adjustable Solar Panel Tilt Mount Brackets Material: Aluminum alloy Supports: 180, 200, 300, 400 600 watts of solar panels Maximum Width: Approx. 104.1cm / 41in 4 x Solar Panel Holder 2 x Tilt Angle Bracket 6 x Knob Bolt 6 x Self Tapping Screws 4 x Hex Bolts 6 x Wing Nut 4 x Flange Nut 4 x Washer 4 x Gasket 1 x User Manual