4pcs Soft Close Hinges for Doors | Hydraulic | Fire Rated | 4.5x4.5 | 8ft | 330 lbs | 1 ¾” Thick | SS304 | K51M-450-B4

Waterson soft close hinges for doors combine self-closing with hydraulic system to keep 8ft, fire-rated doors moving within NFPA 80 clearance and closing requirements. These 4.5-inch self closing door hinge design provides anti-slam protection and adjustable motion for heavy, high-use openings without an overhead closer. Attention: This model is non-refundable DESCRIPTION DETAILS SPECIFICATIONS VIDEO Applications Offices  3-Hr Fire Rated Interior Use Only Frameless Glass Door French Style  Quiet area Breezy environments 8ft Door 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 Include both mechanical and hydraulic mechanism supporting quiet close needs Aesthetically pleasing compared to door closers -- without obtrusive arm Hold-open feature to keep door stay open at 90° Installation Kits   Both machined #12-24 UNC ½”L and wo