Waterson’s 4 inch self closing door hinge are durable and versatile, designed for high-traffic areas and fire-rated doors. Fully adjustable, the 4 inch hinges provide precise control over closing speed, ensuring smooth operation. Made from stainless steel, these hinges withstand frequent use and comply with ADA standards for speed control, closing force, and door clearance.
Code Compliant
✓ ADA Compliant: Opening force < 5 lbs, closing speed > 5 seconds ✓ UL Listed:Meets NFPA 3 hrs fire-rated code ✓ ANSI/BHMA A156.17:Grade One, one million cycles test ✓ ANSI/BHMA A156.7:Standard hinge template
Function Model
✓ A:Purely Mechanical ✓ B:Hydraulic Hybrid ✓ C:Mechanical + Hold Open ✓ D:Hydraulic + Hold Open
Waterson Mechanical vs. Hydraulic Self Closing Hinges
Each hinge has two distinct functions, one adjusted from the hinge top, and the other from the bottom. Choose either mechanical self-closing door hinges or hydraulic hybrid soft-close ones depending on your particular closing needs. For further information, check Waterson Mechanical vs Hydraulic Self Closing Hinges
Note: Waterson hinges are non-handed and can be inverted.
How to Select Waterson 4 Inch Self Closing Hinges
Every Waterson self-closing hinge has a part number that tells you exactly what you are ordering. Read it from left to right: material, hinge style, hinge size, function model and hinges per set, finish, then any options.
For example, K51M-400-A3-630 WP01 is a Type 304 stainless steel, full mortise hinge in 4″ x 4″, a purely mechanical set of 3 hinges, in satin stainless steel finish (630), with a 90° door stop.
Waterson 4 Inch Door Hinges Configuration and Model
A Waterson Stainless Steel Spring Hinge Set contains 2-3-4 hinges. Each hinge provides a specific and distinct function that contributes to the set’s optimal performance.
A Waterson Stainless Steel Spring Hinge Set contains 2-3-4 hinges. Each hinge provides a specific and distinct function that contributes to the set’s optimal performance.
A Waterson Stainless Steel Spring Hinge Set contains 2-3-4 hinges. Each hinge provides a specific and distinct function that contributes to the set’s optimal performance.
A Waterson Stainless Steel Spring Hinge Set contains 2-3-4 hinges. Each hinge provides a specific and distinct function that contributes to the set’s optimal performance.
A Waterson Stainless Steel Spring Hinge Set contains 2-3-4 hinges. Each hinge provides a specific and distinct function that contributes to the set’s optimal performance.
A Waterson Stainless Steel Spring Hinge Set contains 2-3-4 hinges. Each hinge provides a specific and distinct function that contributes to the set’s optimal performance.
A standard 7 ft door takes three hinges, but door weight determines which three-hinge model. Learn the two-step rule for how many self closing hinges per door.
Yes, opening force adjusts below the 5 lbf ADA limit, without giving up closing power. See what else inspectors check in handicap bathroom door requirements.
Yes, but the door decides the set. Fire-rated and garage entry doors allow only two of the four sets, while on exterior front doors, weather decides the stainless steel and closing type. Find out which to pick in our 4 inch self closing hinge guide and how to choose soft close front door hinges.
Various businesses, including hotels, schools, and retail stores, choose Waterson self closing 4 inch door hinges for durability, design, and sustainability.
El Pescador Lodge & Villas
Marine-grade self-closing hinges for a new beachfront rental villa on the Caribbean coast of Belize
✓ Salt-air resistant SS316
✓ Quiet hydraulic soft closing
✓ No bulky door closer
Waterson 4 inch door hinges are easily adjustable and re-adjustable simply with two Allen wrenches in just minutes. Follow our procedure to get the optimal closing experience.
Just a heads-up: Waterson self-closing hinges start at 4″x4″. If you’re in need of smaller self-closing hinges, we’d recommend checking out some other resources! Thank you!
