4 inch Self Close Spring Loaded Hinge, 3 Pack, Fire Rated, Full Mortise, Satin Brushed, K51M-400-A3 | Waterson Hinges

WATERSON Auto Door-Closer Hinge The Waterson hinge is a hybrid conventional door closer & spring hinge. It has a built-in tension adjuster with speed control, so no more slams! Suitable for interior & exterior openings. Easy installation with subtle balance between aesthetics & functionality. We guard your privacy behind doors, soothe the noises of slamming, & guarantee a comfortable dwelling environment. What’s the Difference Between Hydraulic & Mechanical Hinge Types? The difference between the two types defines how your door closes: Hydraulic (soft-closing) type: Soft-closing; the door specifically slows down in the hydraulic zone. Mechanical (self-closing) type: Self-closing; closing speed remains mostly average from swing to latch. Choosing The Right Hinge Type Scenarios where hydraulic & mechanical hinges are needed: Hydraulic: Room is mildly windy & you don’t want your door constantly slamming. Examples: Storefront , luxury apartment, high-end villa. Mechanical: Latching & self-closing are the only priority. No special speed adjustment needed; rapid temperature/humidity changes like outdoor environment. Examples: Five-star hotel. Why Should I Use A Closer Hinge? Our hinges are tested & proven. Over 1,000,000 cycles tested to provide the most durable hinge on the market, with over 20,000 installed. While there are other types of spring loaded & self closing hinges, Waterson is the only one that meets ADA requirements for pressure, speed, & latching, ensuring your door closes smoothly & safely, every time. Fewer pieces to install = less labor & lower total cost. Waterson Hinges are aesthetically appealing & less cluttered. Easier to install than concealed pivots & closers. Our hinges are great for all your door closing needs!

• ADVANCED ENGINEERING - 2 products in 1. Combines a heavy duty hinge and door closer in 1 product.
• FULLY ADJUSTABLE - Complete adjustability of closing force and closing speed. Set it to close exactly how you need.
• DURABLE - Stainless steel construction, no hydraulics, no leaking oil. Fully weather resistant. 1,000,000 cycles tested to provide many years of maintenance free operation.
• VERSATILE - Suitable for fire-rated metal doors, interior wood doors, frameless glass openings and gate applications. Maximum loading up to 260 pounds ( 200kg). Fitting for concealed doors, interior and exterior swing doors of all kinds.
• COMPLIANT - ADA, UL Listed R26997, ANSI/BHMA A156.17 Grade 1.