4pcs Self Closing Interior Door Hinges | Mechanical | Fire Rated | 4x4 | 8ft | 330 lbs | 1 ⅜ or 1 ¾” Thick | SS304 | K51M-400-A4

Looking for self closing interior door hinges that deliver controlled closing force and speed without overhead closers? By using a mechanical hinge setup that fits 4x4 full-mortise doors up to 330 lbs, Waterson hinge set lets you dial in tension at the hinge ends and maintain cycle performance for interior hotel, corridor, and 8ft door applications. Warning : Special finish (US4) is non-refundable DESCRIPTION DETAILS SPECIFICATIONS VIDEO Applications Hotel Rooms  3Hr Fire-rated Fully Exterior   Arch Top  Heavy Duty Courtyard Style 8ft Door Product Description and Features Fully adjustable closing force and speed according to environment needs Numerical adjustment panel on hinge end to set up precise tension Mechanical only mechanism supporting heavy duty and fully exterior   Aesthetically pleasing compared to door closers -- without extrusive arms  UL certified cycle testing ensures many years of low maintenance. Installation Kits   Both machined #12-24 UNC ½”L and wooden t