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Multi-family door hardware is the category of commercial-grade hardware specified for apartment buildings, condominiums, and other residential structures containing multiple dwelling units that fall under the International Building Code (IBC) rather than the International Residential Code (IRC). This distinction is important because IBC requires commercial-grade fire-rated assemblies, panic hardware on egress doors, and ADA-compliant hardware on accessible routes.

The defining challenge of multi-family hardware specification is the dual nature of the building. The corridors, stairwells, and common areas are commercial fire-rated environments subject to full IBC requirements. The individual dwelling units are private residences where occupants expect residential-grade privacy, aesthetics, and operability. Every hardware decision must satisfy both contexts simultaneously.

Main Lobby Entry and Intercom Integration

The lobby entry is the primary security perimeter of a multi-family building. The standard configuration is a cylindrical electric strike integrated with the building intercom or video entry system. When a resident buzzes a visitor in, the electric strike releases the latch bolt, and the door re-latches automatically on closing.

When the door frame cannot accept an electric strike prep, or when higher holding force is required, magnetic locks are the alternative. Maglocks provide 1,200+ lbs of holding force compared to approximately 75 lbs from a standard latch bolt. Magnetic locks require a request-to-exit device on the interior to satisfy free egress requirements per IBC.

Surface door closers on the lobby door are a security requirement. A door that fails to self-close and positively latch after every entry leaves the building unsecured. Power operators are specified on ADA-designated accessible entries.

Stairwell and Egress Doors

Panic exit devices are installed on the stairwell side of each stairwell door to provide free egress during evacuation. Exit device trims on the corridor side control re-entry by key or credential. Some floors may be designated as "no re-entry" floors per the building security policy, controlled by the trim function.

IBC Section 1010.1.9 requires stairwell re-entry at minimum every 4th floor. During fire alarm activation, all stairwell doors must unlock for re-entry. This requires electrified exit device trims connected to the fire alarm system.

Corridor Fire Doors and Unit Entry Closers

Every fire-rated door between the corridor and a dwelling unit must have a surface door closer to maintain the self-closing and positive-latching requirements of the fire-rated assembly.

Residents frequently find door closers on their unit entry door objectionable because of the weight they add to the door and the institutional appearance. Two approaches mitigate this: adjusting closing speed and latching speed to the slowest acceptable settings reduces the "slam" effect, and overhead concealed door closers installed within the frame header eliminate the visible surface-mounted arm entirely.

Individual Unit Entry Doors

Cylindrical lever locks in apartment function are the standard specification. Apartment function differs from office function in that the outside lever is always locked (requiring a key for every entry), the inside lever is always free for egress, and a thumb-turn on the interior controls the dead-locking latch. This function prevents the door from being left in an unlocked state by the occupant.

A separate deadbolt is standard on apartment unit entry doors, providing the secondary locking that residents expect. The deadbolt supplements the cylindrical lever lock; it does not replace it.

SFIC cores with a restricted keyway are the recommended keying specification. SFIC allows management to rekey at tenant turnover in minutes without a locksmith. Restricted keyways prevent tenants from duplicating keys at retail hardware stores.

In Class A luxury developments, electronic keypad locks are increasingly specified on unit doors for keyless resident entry. The deadbolt should remain mechanical; the last line of security should not depend on battery power.

Common Areas and Amenity Spaces

Controlled amenity spaces (fitness rooms, pool access, rooftop) use cylindrical lever locks in storeroom function with fob or key entry. Package rooms are specified with electronic keypad locks for audit trail purposes.

Surface door closers are required on all fire-rated amenity doors. On non-fire-rated amenity doors, closers are not recommended because residents will prop the doors open and damage the closer.

Parking Garage Access Doors

Magnetic locks controlled by fob or access card are the standard specification for garage-to-building access doors. Panic exit devices are installed on the building side for egress. Surface door closers at Size 5 or larger account for air pressure variations from vehicle traffic in the garage.

Hardware Schedule

For multi-family project hardware schedules, master key system design, and intercom-integrated access control pricing, request a quote from National Lock Supply.