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Previously, overhead closers, floor springs, spring hinges, and Waterson’s K51M/K51P series all had to be installed at the pivot point between the door and frame, requiring the door to sit close to a wall or post. In many applications, such as cashier gates and bank counter doors, this limitation forced designers to compromise aesthetics and function. K51W breaks this barrier. It can be mounted at almost any position on a wall or post, allowing fence gates, garden gates, lattice gates, and other door types to gain adjustable self-closing performance without limiting the original design. K51W also carries Waterson’s key advantages: ADA-compliant opening force under 5 lbs, hydraulic speed control to prevent slamming, 304/316 stainless steel precision casting, and UL Grade 1 testing for over 1 million cycles. It performs reliably even in pools, coastal areas, and other harsh environments.
