Hager 790-905 Concealed Leaf C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$808.50
$571.99
Hager 790-905 Concealed Leaf Continuous Hinge, 1/8” Inset

Hager 790-905 Concealed Leaf Continuous Hinge with 1/8" Inset - 304 Stainless Steel

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Model: 790-905 83 US32D
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$808.50
$571.99
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Hager 790-905 Concealed Leaf Continuous Hinge with 1/8" Inset - 304 Stainless Steel

Heavy-Duty Concealed Continuous Hinge for Commercial Applications

The Hager 790-905 Concealed Leaf Continuous Hinge delivers professional-grade performance with 14-gauge Type 304 stainless steel construction and 1/8" inset design. Rated for doors up to 300 pounds and 10 feet in length, this ANSI A156.11B Grade 1 certified hinge accommodates maximum door thickness of 1-3/4" with fire ratings up to 3 hours for metal doors and 90 minutes for wood composite doors.

Professional Features & Benefits

  • Heavy-Duty Construction: 14-gauge Type 304 stainless steel provides exceptional durability and corrosion resistance for demanding commercial applications.
  • Maximum Load Capacity: Supports doors up to 300 pounds with maximum door length of 10 feet for versatile installation options.
  • Precision Bearing System: Dual 6/6 nylon bearings between each knuckle ensure smooth operation and extended service life.
  • Fire-Rated Performance: UL listed with fire ratings up to 3 hours for metal doors and 90 minutes for wood composite doors.
  • ANSI Grade 1 Certification: Meets ANSI A156.11B Grade 1 standards for 150-pound doors and Grade 2 for 300-pound doors.
  • Door Edge Protection: Integrated protection lip on both faces of door prevents damage and wear at critical stress points.
  • Flexible Length Options: Available in standard lengths of 79", 83", 85", 95", and 119" with custom lengths available.
  • Optional Features: Tamper resistant hospital tips, sheared leaf, raised barrel, wide throw, security studs, and Dutch door preparation available for specialized applications.

Technical Specifications

  • Certifications: ANSI A51011BGrade 1 for 150-pound doors, UL
  • Clearance: 9/32" minimum hinge side plus standard lockside clearance
  • Commercial/Residential: Commercial
  • Door Reinforcement: Wood - None required up to 200 lbs. For metal doors, a 1/8" (3 mm) thick reinforcement plate is recommended along the hinge edge for proper thread engagement of the adjustment studs.
  • Fastener Size: #10-24 x 5/8" S/SDril-Kwik® (metal frame), #1/4-32 x 3/4" S/Smachine fastener (used with adjustment stud), # 7/16-20 x 1-3/8" S/Sadjustment stud (metal/wood door)
  • Finishes: US32D
  • Fire Rating: Up to 3 hr. metal and 90 min. wood composite
  • Length: 79", 83", 85", 95", 119"
  • Length Options: Standard and Custom
  • Material: 14 Ga. (0.075") Type 304 Stainless Steel
  • Maximum Door Length: 10-'0"
  • Maximum Door Thickness: 1-3/4"
  • Maximum Door Weight: 300 lbs
  • Notes: For metal doors, a 1/8" (3.2mm) thick reinforcement plate is strongly recommended along the hinge edge for proper thread engagement of the adjustment studs.
  • Optional Features: Tamper Resistant Hospital Tips (HT), Sheared leaf, Raised Barrel (SWAGED), Wide Throw, Security Studs, Dutch Door Prep (DUTCH)
  • Special Features: 1/4" (6.3 mm) diameter Stainless Steel Pin. Dual 6/6 Nylon bearings between each knuckle. Door edge protection lip (both faces of door). Not recommended for doors with a beveled edge on the hinge side. 1/16" (1.6 mm) inset.
  • Subcategory: Continuous Geared Hinges

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness up to 1-3/4", maximum weight of 300 pounds, and 9/32" minimum hinge side clearance plus standard lockside clearance.
  2. For metal doors, install recommended 1/8" thick reinforcement plate along hinge edge for proper thread engagement of adjustment studs. Wood doors up to 200 pounds require no reinforcement.
  3. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces, ensuring proper alignment for concealed leaf installation.
  4. Install fasteners per specifications: #10-24 x 5/8" stainless steel Dril-Kwik for metal frames, #1/4-32 x 3/4" machine fasteners with adjustment studs, and #7/16-20 x 1-3/8" adjustment studs for doors.
  5. Adjust operational components using the stainless steel pin and bearing system for proper alignment and smooth operation throughout the full range of motion.
  6. Test hinge operation to verify proper function and make final adjustments as needed. Note: Not recommended for doors with beveled edge on hinge side. Refer to manufacturer documentation for complete installation details and custom hole patterns for nonstandard lengths.

Professional Applications

  • Commercial Office Buildings
  • Healthcare Institutions with Tamper-Resistant Requirements
  • Educational Facilities
  • Industrial and Warehouse Facilities
  • Fire-Rated Door Applications
  • High-Traffic Commercial Entrances
  • Multi-Tenant Residential Properties

Why Choose Hager Quality?

Hager continuous hinges deliver professional-grade reliability with 14-gauge Type 304 stainless steel construction rated for doors up to 300 pounds. ANSI A156.11B Grade 1 certification and UL fire ratings up to 3 hours demonstrate proven performance standards. Engineered for demanding commercial applications where dependable operation and long-term durability are essential.

Hager's Roton® continuous geared hinge distributes door weight along the full hinge length, minimizing lateral wear in high-traffic applications.

Product Specs

Subcategory:
Continuous Geared Hinges
Product Group:
Door Hinges and Pivots
Product Subgroup:
Continuous Hinges
Product Type:
Concealed Hinge
Commercial/Residential:
Commercial
Product Model:
790-905
Product Substrate:
304 Stainless Steel
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

Hager 790-905 83 US32D – Frequently Asked Questions

1) Will the Hager 790-905 continuous hinge work on a 1-3/4 inch door?
Yes, 1-3/4 inches is the maximum door thickness for the 790-905 concealed leaf geared hinge, so a standard commercial door is right at the top of its range. Thinner doors are fine. One limitation worth catching before you order: it is not recommended for doors with a beveled edge on the hinge side. If the existing door has a beveled hinge edge, this is the wrong hinge for that opening.
2) Is the Hager 790-905 continuous hinge fire rated?
UL listed, with fire ratings up to 3 hours on metal doors and 90 minutes on wood composite doors. That covers most rated openings in a commercial corridor or stairwell, and the 90 minute wood composite figure is the one to check against your door label if the leaf is not hollow metal.
3) Does a hollow metal door need reinforcement before installing a Hager 790-905 geared hinge?
For metal doors, Hager strongly recommends a 1/8 inch (3.2 mm) thick reinforcement plate along the hinge edge, so the 7/16-20 x 1-3/8 inch adjustment studs get proper thread engagement. Wood doors up to 200 pounds need no reinforcement at all. If you are hanging a metal door and the leaf has no hinge-edge channel reinforcement, sort that out before the hinge shows up on site.
4) What clearance do I need to leave for a Hager 790-905 concealed leaf hinge?
9/32 inch minimum on the hinge side, plus your standard lockside clearance. The 790-905 is a 1/8 inch inset concealed leaf design, so the leaves sit into the door and frame rather than wrapping the edge, and that hinge-side gap is what the geared barrel needs to swing clear. Frames prepped tight to a butt hinge gap will not take it without rework.
5) Should I use a continuous geared hinge instead of butt hinges on a high traffic door?
That is exactly what the 790-905 is for. A geared continuous hinge runs the full height of the door and spreads the weight along the entire hinge line, instead of concentrating it on three or four butt hinge points. On a high traffic entrance, an abused classroom door, or any opening where butts keep pulling out of the frame or the door starts sagging, that load distribution is the reason to switch. Butt hinges remain the simpler and cheaper choice on low traffic interior doors where sag has never been a problem.
6) What fasteners come into play when installing a Hager 790-905 continuous hinge?
Three sizes, and they do different jobs. #10-24 x 5/8 inch stainless Dril-Kwik fasteners go into the metal frame. #1/4-32 x 3/4 inch stainless machine fasteners are used with the adjustment stud. And #7/16-20 x 1-3/8 inch stainless adjustment studs land in the door, metal or wood. All stainless, which matters if the opening is exterior or in a wash-down area. Install to Hager's templates so the frame and door hole patterns line up.
7) What options can I add to a Hager 790-905 continuous hinge for a hospital or secure facility?
Tamper resistant hospital tips (HT) are the option for behavioral health and patient areas, and security studs are available where the concern is the fasteners being attacked from the secure side. Beyond those, you can order sheared leaf, raised barrel (SWAGED), wide throw, and Dutch door prep (DUTCH). Wide throw is the one to look at when the door has to clear a deep trim or projecting frame condition to swing a full 180.
8) Does the Hager 790-905 protect the door edge, and what keeps it operating smoothly over time?
An integrated protection lip covers both faces of the door at the hinge edge, which is where a heavy door in a busy building takes its abuse. Inside the barrel, dual 6/6 nylon bearings sit between each knuckle, so the gear train rides on bearings the full height rather than metal on metal. On a door cycled all day that is what keeps the swing from getting notchy.
How fast can I get the Hager 790-905 83 US32D delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Hager 790-905 83 US32D come with a warranty?
Absolutely. The Hager 790-905 83 US32D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Hager 790-905 83 US32D?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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