The Norton 8301689 Adjustable Surface Mount Door Closer features a slim line aluminum cover and sex nuts for secure installation. Engineered for commercial use, it incorporates a rack and pinion design with adjustable valves for latch, sweep, and backcheck control, allowing precise door operation. Certified to ANSI/BHMA A156.4 Grade 1 standards, this non-handed closer delivers reliable performance exceeding 25 million cycles. Backed by a limited 25-year warranty, it reflects Norton’s innovation in durable, high-quality door control solutions suitable for demanding environments.