A commercial sectional steel door for moderate to heavy-duty commercial and industrial applications, Wayne Dalton’s Model 2415 is available in a wide variety of sizes and configurations. This door features 24-gauge ribbed steel sections and heavy-duty 16-gauge vertical end stiles for increased strength. The C-shaped stiles, have pre-located, extruded holes for quick, secure mounting of hinges. Model 2415 offers a ribbed exterior skin that also helps to increase strength while enhancing the buildings visual appearance. The exterior ribbing consists of two deep and two shallow ribs in each section and the bottom section features a vinyl bulb-shaped astragal. Optional insulation consists of 1-5/16″ expanded polystyrene which provides an R-value* of up to 7.64 and a U-value as low as 0.13.