Hager 780-257HD Full Surface Continuous Geared Hinge Heavy Duty Double Door Mullion Mount

Hager 780-257HD Full Surface Continuous Geared Hinge Heavy Duty Double Door Mullion Mount

Professional Heavy-Duty Continuous Hinge for Double Door Applications

The Hager 780-257HD is a full surface continuous geared hinge engineered for heavy-duty applications requiring double door mounting from a fixed mullion. Constructed from aluminum 6063-T6 material, this hinge accommodates mullion widths from 1-1/2" (38mm) to 2-1/4" (57mm) with a 1/16" (1.5mm) inset design. Available in lengths of 79", 83", 85", 95", and 119", the hinge meets ANSI/BHMA A156.26 C standards and provides up to 3-hour fire rating for metal doors and 90-minute rating for wood composite doors with studs.

Professional Features & Benefits

• Heavy-Duty Construction: Aluminum 6063-T6 material provides exceptional durability for high-frequency doors or heavy, medium-frequency door applications.
• Double Door Capability: Specifically designed for hanging two entrance doors from a fixed mullion with security moldings and 1/16" (1.5mm) inset configuration.
• Flexible Mullion Compatibility: Accommodates mullion widths from 1-1/2" (38mm) to 2-1/4" (57mm) with 1/32" (1mm) minimum clearance requirements.
• Multiple Length Options: Available in 79", 83", 85", 95", and 119" lengths to suit various door height requirements.
• Fire Rating Compliance: Provides up to 3-hour fire rating for metal doors and 90-minute rating for wood composite doors with studs for code compliance.
• No Door Reinforcement Required: Eliminates need for additional door preparation while supporting loads up to 200 lbs without frame reinforcement.
• Professional Fastening System: Includes 1/4-20 x 1-1/4" Sexbolt fasteners and Dril-Kwik #12-24 X 11/16" Pan Head Screws for secure installation.
• Lifetime Warranty: All Roton products have a lifetime warranty with one-year coverage on electric portions for added confidence and protection.
• Heavy duty for high frequency doors or heavy, medium frequency doors

Technical Specifications

• Applications: Double hinge for hanging two entrance doors from a fixed mullion
• Clearance: 1/32" (1mm) minimum recommended between mullion and door, plus standard lockside clearance - 1-1/2" (38mm) to 2-1/4" (57mm) mullion width;
• Commercial/Residential: Commercial
• Door Reinforcement: None required to 200 lbs. Heavier weight use 16-gauge channel.
• Fasteners: Standard: 1/4-20 x 1-1/4" Sexbolt (fastener + Post) - (total for both 052A and 052B)
• Features: Heavy duty for high frequency doors or heavy, medium frequency doors
• Finishes: CLR, DBZ, BLK
• Fire Rating: Up to 3-hour metal and 90 minute wood composite (with studs)
• Length: 7 9", 83", 85", 95", 119"
• Material: Aluminum 6063-T6
• Notes: EPD: Roton Continuous Hinges Environmental Product Declaration
• Subcategory: Continuous Geared Hinges
• Warranty: Wll Roton products have a lifetime warranty. When ordering electric Roton, the electric portion of the hinge has a one-year warranty.

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, mullion width from 1-1/2" (38mm) to 2-1/4" (57mm), and frame face clearance of 1-5/8" (41mm) minimum plus 3/16" (5mm) rotational clearance.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and mullion surfaces, ensuring 1/32" (1mm) minimum clearance between mullion and door.
3. Prepare doors and mullion by drilling required holes for 1/4-20 x 1-1/4" Sexbolt fasteners and #12-24 X 11/16" Pan Head Screws as specified in manufacturer instructions.
4. Install mounting hardware and secure the hinge to doors and mullion per manufacturer torque specifications, ensuring proper 1/16" (1.5mm) inset alignment.
5. Adjust operational components for proper alignment, smooth operation, and security molding fit throughout the full range of motion for both doors.
6. Test hinge operation to verify proper function of both doors and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Commercial Office Building Entrances
• Educational Facility Main Doors
• Healthcare Institution Entry Systems
• Retail Store Front Applications
• Industrial and Warehouse Access Points
• Multi-Tenant Residential Building Entrances
• Government and Municipal Building Doors

Why Choose Hager Quality?

Hager continuous hinges deliver professional-grade reliability with aluminum 6063-T6 construction meeting ANSI/BHMA A156.26 C standards for demanding commercial applications. All Roton products include a lifetime warranty with specialized coverage for electric components, providing confidence in long-term performance. Engineered for heavy-duty applications where dependable double door operation from fixed mullions is essential.

Support Resources

• Commercial Hinges Catalog 2024 (PDF)
• Standard Hinge Locations Guide (PDF)
• Commercial Hinges Cross Reference (PDF)
• Concealed Electric Hinge Modification (PDF)
• Electric Hinge Installation Instructions (PDF)
• Continuous Hinges Catalog (PDF)