The Norton 8301H689 Adjustable Hold Open Surface Mount Door Closer features a slim line cover and sex nuts with an aluminum finish, delivering reliable, high-performance door control. Engineered with a rack and pinion design, it includes independent valves for latch, sweep, and backcheck functions, allowing precise adjustments for optimal door operation. This non-handed, ANSI/BHMA A156.4 Grade 1 certified closer exceeds 25 million cycles and is backed by a limited 25-year warranty, making it a durable choice for commercial applications requiring superior control and longevity.