3pcs Soft Closing Hinges | Hydraulic | Fire Rated | 4.5x4.5 | 7ft | 260 lbs | 1 ¾” Thick | SS304 | K51M-450-B3

Fire Rated Soft Closing Hinges are tested to UL standards for 3-hour assemblies and maintain regulated closing behavior through a spring-hydraulic mechanism. Waterson 4.5"×4.5" hinge template greatly supports 260-lb fire doors while preserving controlled speed through the final degrees of closing. 3 years warranty Attention: Special finishes (US4) is non-refundable DESCRIPTION DETAILS SPECIFICATIONS VIDEO Applications Offices  3Hr Fire-rated Interior & Exterior Frameless Glass Door French Style  Quiet area Breezy environments Product Description and Features Apply for door open ≤ 120°  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