4 Pack Four And One Half Inch Ball Bearing Door Hinges With Prime Coat For Smooth Quiet Operation On Light To Medium Weight Doors For Interior And Exterior Use Includes Three Hour UL Fire Rating

Commercial 4.5 in ball bearing hinge, fire-rated, 4-pack
✔️ 4.5 in square footprint, prime-coated finish, 3-hour fire rating, reversible

These are commercial-grade ball bearing door hinges sold in a 4-pack. They feature a 4.5-inch square footprint, a prime-coated finish for durability, and a design that supports smooth, quiet door operation for lightweight to mid-weight doors in interior and exterior commercial settings. The hinges are reversible for left- or right-hand doors and include template-drilled holes for quick, accurate installation, with a 3-hour UL fire rating for safety compliance.

✅ 4.5 in (114 mm) square footprint for standard door prep
✅ Ball bearing design for quiet, smooth operation
✅ Prime-coated finish resists rust and weathering
✅ Reversible for left- or right-handed doors
✅ Template-drilled holes for easy, quick installation
✅ 3-hour UL fire rating supports safety requirements

💡 What is a 4.5 inch ball bearing door hinge used for in commercial facilities? This handy hardware is designed for high-traffic doors where quiet, smooth operation matters.

- Ideal for interior or exterior commercial doors in offices, schools, retail, and hospitals - Helps minimize door sag and misalignment under heavy use - Reversible mounting supports both LH and RH doors with template holes for easy install - Prime-coated finish provides weather resistance and longevity, with a 3-hour fire rating