Remove and dispose of existing 16x7-foot garage door and tracks. Install new 4-section garage door on new heavy-duty galvanized steel tracks; reuse existing motorized opener. New door is high tensile strength steel with two coats of factory-applied paint, and foam insulated to minimum R-12, with thermal seals between pinch-resistant panels. Windows in top panel are ½-inch insulated glass. Hardware includes galvanized steel hinges and ball-bearing urethane rollers. Lifetime warranty.