Solar Panel: 30w crystalline solar panel Solar Panel Bracket:2mm aluminum alloy,non-corrosize,surface oxidation treatment Housing and Flashing: 2mm aluminum, no seams to prevent leaking,non-corrosive Motor: DC brushless motor,whisper quiet direct current. Fan Blade:12” diameter, 5-blade aluminum with balanced hub Protective Animal Screen: 304# stainless steel wire screen mesh Fasteners and nuts: 304# stainless steel Solar Attic Fans provide active ventilation and space and lower the temperature and removing moisture build-up – giving you a cooler house, reduced attic mold and mildew, and a more comfortable living environment can ventilate up to 2800 square feet of attic space with a single fan 2. Venting Capacity: moves up to 1550 CFM in full sunlight 3. Housing Colors: black,grey or others 4. Packing: colour box,Foam,Instructions 5. Product Size: 22″Lx22″Wx10.5″H Packing Size: 24″Lx12″Wx24″H 6. Weight: Net Weight: 11kg Gross Weight: 12kg