One 3 inch (76.2 mm) full-range high-extrusion high-fidelity polypropylene driver with butyl rubber surround. Weatherized components for indoor/outdoor applications. Shallow 3.5 inch (88.9 mm) deep all-steel backcan with integrated driver and baffle configuration. Ultra-compact design with a total visible footprint of less than 6.3 inch (160.6 mm)diameter. Rapid installation blind-mount fixed-wing mounting mechanism with constant tension design affixing to wall thicknesses ranging from 0.1 in. (2.5 mm) to 1.5 in. (38.1 mm). Corrosion-resistant powder-coated aluminum grille with snap fit attachment. Ceramic input terminal accepts up to 10 gauge plenum rated signal wire and includes thermal fuse.