Bommer FM85HD - 85" Standard Full Mortise Continuous Geared Hinge
These 85" long Full Mortise Continuous Gear Hinges are normally used in new construction and are applied as to conceal both hinge leaves. Also used in renovations and the leaves will cover existing standard door hinge preps. Full Mortise Hinge - The frame leaf is fastened to the door frame jamb. Door leaf is fastened to the door edge.
Bommer FM85HD Full Mortise - 85" Continuous Gear Hinges are packaged complete with mounting hardware. All fasteners are #12-24 x 7/16" Type C , FHUC screws that are self threading.
Unlike a conventional hinge, a Continuous Geared Aluminum hinge has no pin. Also, it is not like a "piano" hinge either, which has 50% of each knuckle cut away, and depends on a thin wire to hold each leaf together.
A Continuous Geared Aluminum hinge consists of two full-height, paired and geared leafs. Each geared leaf rotates evenly from top to bottom, riding on superior Delrin Teflon bearings. The geared leafs and bearings are held together by a full length channel cap. This assembly retains the smooth, clean lines of the door and frame, while easily supporting heavy doors.
Specifications for Bommer FM85HD
- Hinge Length: 85"
- Hinge Material: Aluminum
- Number of Bearings: 27
- Maximum Door Weight: 540 lbs. (Heavy Duty)
- Maximum Door Height: 7'-1" (85")
- Maximum Door Thickness: 1-3/4"
- Hinge Type: Full Mortise Continuous Gear Hinge
- UL Fire Rated
- Packaged with Installation Hardware
- Made in the USA
- BHMA Certified Grade 1
- Lifetime Guarantee
For additional information and specs on Bommer Continuous Geared Hinges:
Bommer Continuous Geared Hinge Information (PDF 6MB - 7-pages Color).
*Normally this is a special order item. Please allow 3-5 weeks for delivery.
** Sold individually (1 Hinge).