The IR SECURITY & SAFETY heavy-duty door closer has a cast-iron cylinder, forged steel arm, all-weather fluid, and double heat-treated pinion that helps provide a long life cycle. 1461 Series Closer is nonhanded and can be mounted with parallel arm on either right or left swing door. Nonsized cylinder is adjustable for interior doors 5 ft. and exterior doors to 4 ft. Does not include cover. Powder-coated finish. Self-tapping/self-reaming screws, and peel-and-stick templates help ensure accurate installation.