Timberline HDZ Pewter Gray Algae Resistant Laminated High Definition Shingles (33.33 sq. ft. per Bundle) Ventilation Accessories Eliminate emergencies and business downtime Eliminate emergencies and business downtime built in intelligence that includes LeakSense the most accurate leak detection system around that can catch leaks as small as a grain of sand and provide real time leak alerts that help to prevent damage Southwestern Number of Shelves Included in Cabinet 0 Number of Drawers 3 Included Hardware Cabinet Material Medium Density Fiberboard (MDF) Returnable 180 Day Cabinet Color Family Reddish Brown Features Adjustable Hinges your roofing needs are sure to be met Waterproof Fire Rating (UL 790) Class A Material Asphalt Number of Bundles per 100 sq