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Office building door hardware refers to the complete set of mechanical and electrified locking devices, closers, hinges, and protective accessories specified across all door openings in a commercial office environment. It includes everything from the main lobby entry through individual tenant suites, private offices, server rooms, stairwells, and parking access points.

Hardware specifications for office buildings are governed by the International Building Code (IBC) for egress and fire safety, ANSI/BHMA A156 series for performance grades, and ADA/ABA Accessibility Guidelines for operability requirements. Each zone within the building carries different traffic loads, security expectations, and code obligations that determine which hardware is appropriate.

Main Lobby and Building Entry

Office building lobbies typically use aluminum storefront glass doors in narrow or medium stile frames. These frames cannot accept standard cylindrical locksets due to the limited stile width (typically 2" on narrow stile). The appropriate specification is an electrified mortise lock in entry function, which provides both a deadbolt for after-hours security and a latch for daytime traffic within a single unit.

When the existing frame cannot accept a mortise prep, a standard mechanical lock paired with a cylindrical electric strike provides remote release capability from an access control panel, buzzer, or intercom system.

Closers on lobby doors are sized per ANSI/BHMA A156.4. A standard 3'0" x 7'0" door requires a minimum Size 4 surface door closer. Oversized entries require Size 5. At least one building entry must include a power operator to satisfy ADA accessibility requirements per IBC Section 1105.

Lobby doors that exceed 500,000 cycles per year benefit from continuous hinges rather than standard five-knuckle ball bearing hinges, as continuous hinges distribute weight across the full door height and resist sagging under high-cycle use.

Tenant Suite Entry Doors

The standard specification for tenant suite entries is a cylindrical lever lock in office function. Office function locks from outside by key, has a thumb-turn on the inside, and provides free egress at all times. Grade 1 is specified for multi-tenant buildings with heavy corridor traffic. Grade 2 is acceptable for single-tenant occupancy.

Multi-tenant office buildings use master key systems to allow building management access to all doors while restricting each tenant to their own suite. SFIC (Small Format Interchangeable Core) systems allow property managers to swap cores with a control key at tenant turnover without removing hardware or calling a locksmith.

All tenant suite entry levers must comply with ADA operability requirements: operable with one hand, no tight grasping or twisting, and no more than 5 lbf of operating force. Knob locks do not satisfy these requirements and should not be specified on suite entries.

Server Rooms and IT Closets

Server rooms require hardware that provides both restricted access and an audit trail of entry events. Electronic keypad locks with logging capability are the primary specification. They record which code was used and when, satisfying both security and accountability requirements.

A mortise lock in storeroom function serves as the mechanical backup. Storeroom function means the outside lever is always locked and requires a key for every entry, which prevents the door from being accidentally left unlocked.

Cylinders on server room doors should use a restricted keyway that requires manufacturer authorization for key duplication. Standard keyways can be copied at any retail hardware store. Where the door frame has a wide gap, a door latch protector prevents shimming of the latch bolt.

Stairwell and Fire-Rated Corridor Doors

All fire-rated doors in an office building require surface door closers. This is a code requirement with no exceptions in commercial occupancies. Stairwell re-entry must be provided at every 4th floor per IBC Section 1010.1.9.

Where the stairwell serves as a required means of egress, panic exit devices are installed on the stairwell side to provide free egress. An exit device trim on the corridor side provides controlled re-entry by key or credential.

Parking Garage and Exterior Doors

Exterior access doors from parking structures require a deadbolt in addition to the latch for forced entry resistance. All outswing exterior doors require security hinges with non-removable pins to prevent hinge pin extraction from the exterior side.

Hardware Schedule

For office building hardware schedules and project-specific pricing, request a quote from National Lock Supply.