Skylight. 21 1/2 in. x 46 1/2 in. Fixed, deck mounted. Made of wood, aluminum and LOW-E3 glass. LOW-E3 glass provides year round comfort and energy savings and reduces heat gain by 64% compared with ordinary glass and 35% compared with LOW-E2 glass. Durable metal frame for a long life on the roof in extreme climates. Maintenance free pre-painted white frame, curved cladding and lower profile on roof. Protective deck seal provides air and water barrier for a simplified, leak proof install. Meets new ENERGY STAR requirements. Pre-mounted "Pick&Click!" brackets ease installation for sunscreen accessories. Neutral grey. Warranties: 20 years on seal failure (moisture between glass panes), 10 years for defective parts on skylights and flashing, and 5 years for defective parts on sunscreening products.