Hager 790-900 Concealed Leaf Continuous Hinge with 1/8" Inset - 304 Stainless Steel

Hager 790-900 Concealed Leaf Continuous Hinge with 1/8" Inset - 304 Stainless Steel

Heavy-Duty Concealed Continuous Hinge for Commercial Applications

The Hager 790-900 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'-0" maximum length, this ANSI A156.26 Grade 1 certified hinge accommodates maximum door thickness of 1-3/4" with dual 6/6 nylon bearings between each knuckle for smooth operation.

Professional Features & Benefits

• Heavy-Duty Load Capacity: Supports doors up to 300 pounds with ANSI A156.26 Grade 1 certification for 150-pound doors and Grade 2 for 300-pound doors.
• Premium Stainless Steel Construction: 14 gauge Type 304 stainless steel provides exceptional corrosion resistance and durability for demanding commercial environments.
• Concealed Leaf Design: 1/8" (3.2 mm) inset configuration with concealed leaf construction offers clean aesthetics and enhanced security.
• Dual Bearing System: Dual 6/6 nylon bearings between each knuckle ensure smooth, quiet operation throughout the door's service life.
• Flexible Door Compatibility: Works with beveled (non-hinge side) or square edge (hinge side) doors of any material up to 1-3/4" thickness.
• Fire Rating Compliance: Approved for up to 3-hour metal door applications and 90-minute wood composite door installations.
• Multiple Length Options: Available in standard lengths of 79", 83", 85", 95", and 119" with custom lengths available for specific applications.
• Electric Modification Ready: Compatible with Power Transfer Preparation (EPT 2 or EPT 10), Exposed Electric Switches (E1S), and Electric Through-Wire (ETW) options.

Technical Specifications

• Certifications: ANSI A156.26 Grade 1 for 150-pound doors, UL
• Clearance: 7/32" 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.
• Electric Modifications: Power Transfer Preparation (EPT 2) or (EPT 10), Exposed Electric Switches (E1S), Electric Through-Wire (ETW)
• Fastener Size: #10-24 x 5/8" S/SDril-Kwik® (metal frame), #10-16 x 1-1/4" S/SType AB (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: Any nonstandard length hinge may require a custom hole pattern based on the requested length. Consult Hager Companies to address the field prep for the doors and frames.
• Optional Features: Lead lined hole pattern, Tamper Resistant Hospital Tips (HT), Sheared leaf, Raised Barrel (SWAGED), Wide Throw, Security Studs, Dutch Door Prep (DUTCH)
• Special Features: Dual 6/6 Nylon bearings between each knuckle. May be used with beveled (non-hinge side) or square edge (hinge side) doors. 1/8" (3.2 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 handing compatibility.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces, ensuring proper 1/8" inset alignment.
3. Prepare door and frame by drilling required holes using #10-24 x 5/8" stainless steel fasteners for metal frames or #10-16 x 1-1/4" Type AB fasteners for wood doors.
4. Install reinforcement as needed - no reinforcement required for doors up to 200 pounds, but 1/8" thick reinforcement plate recommended for metal doors along hinge edge.
5. Mount hinge ensuring proper clearance of 7/32" on hinge side plus standard lockside clearance for smooth operation.
6. Test hinge operation to verify proper function and alignment throughout full range of motion. Refer to manufacturer documentation for complete installation details and custom length specifications.

Professional Applications

• Commercial Office Buildings
• Healthcare Institutions
• Educational Facilities
• Government and Municipal Buildings
• Industrial and Warehouse Facilities
• High-Security Applications
• Fire-Rated Door Assemblies

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 A156.26 Grade 1 certification and fire ratings up to 3 hours for metal doors ensure code compliance and long-term performance. Engineered for demanding commercial applications where dependable operation and security are essential.