4pcs Adjustable Self Closing Door inges | Mechanical | Fire Rated | 4.5x4.5 | 8ft | 330 lbs | 1 ¾” Thick | SS304 | K51M-450-A4

Adjustable self closing door hinges in a 4.5"×4.5" full-mortise format provide controlled spring tension for doors up to 330 lbs, allowing precise tuning of closing force without overhead hardware. Waterson adjustable self closing hinge setup uses a mechanical system with a numerical tension panel, giving projects a dependable adjustable self close hinge option for both interior and exterior heavy-duty openings. Attention: Special finishes (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