Hager ECBB1100 Full Mortise Ball Bearing Hinge 4-1/2″ x 4-1/2″ Steel 5 Knuckle Standard WeightProfessional Full Mortise Ball Bearing Hinge SolutionThe Hager ECBB1100 Full Mortise Ball Bearing Hinge delivers reliable performance for medium weight doors requiring medium frequency service. This standard weight hinge features precise 4-1/2″ by 4-1/2″ dimensions with durable steel construction and 5 knuckle design. ANSI A8112 certified for professional applications, this hinge accommodates both machine and wood fastener installations with 1-1/4″ x 12″ wood fastener compatibility.Professional Features & BenefitsStandard Dimensions: 4-1/2″ by 4-1/2″ sizing provides compatibility with standard door and frame preparations for versatile installation options.Ball Bearing Operation: Precision ball bearing design ensures smooth, long-lasting operation for medium frequency door service applications.Heavy-Duty Steel Construction: Durable steel construction provides exceptional strength and reliability for commercial door applications.5 Knuckle Design: Five knuckle configuration distributes load evenly across the hinge for enhanced durability and operational stability.Removable Pin System: Non-rising removable pin with button tip and plug allows for easy door removal when necessary for maintenance or replacement.Flexible Fastener Options: Compatible with both machine and wood fasteners including 1-1/4″ x 12″ wood screws for various installation requirements.ANSI Certification: Meets ANSI A8112 standards ensuring compliance with professional building requirements and quality specifications.Multiple Finish Options: Available in USP, US3, US4, US10B, and US26D finishes to match various architectural specifications and design requirements.Non-rising removable pin with button tip and plug.Technical SpecificationsApplications: For use on medium weight doors or doors requiring medium frequency service.Certifications: Meets ANSI A8112Fastener Size: – Wood 1-1/4″ x 12″Fasteners: All machine and all woodFeatures: Non-rising removable pin with button tip and plug.Finishes: USP, US3, US4, US10B, US26DSubcategory: Commercial HingesInstallation & OperationReview manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.Professional ApplicationsCommercial Office BuildingsEducational FacilitiesHealthcare InstitutionsRetail EstablishmentsIndustrial and Warehouse FacilitiesMulti-Tenant Residential PropertiesGovernment and Municipal BuildingsWhy Choose Hager Quality?Hager hinges deliver professional-grade reliability with durable steel construction and precision ball bearing operation designed for medium frequency service applications. ANSI A8112 certification ensures compliance with professional building standards. Engineered for demanding commercial applications where dependable door operation and long-term performance are essential.