What This Article Covers
Storeroom function is one of the most widely used institutional lock functions in commercial construction, yet it gets misapplied often enough to cause real problems at inspection time. This article explains exactly what storeroom function does, where it belongs, how it interacts with electrified hardware, and what facility managers, contractors, and specifiers need to get right before the hardware schedule ships. If you are specifying locks for supply rooms, server rooms, utility closets, pharmaceutical storage, or any space that stays locked when no staff is present, this is your reference.
What Is Storeroom Function?
Storeroom function (BHMA/ANSI code F07 or F08 depending on lock type) means the outside lever or knob is permanently locked and does not operate unless a valid key is used to retract the latchbolt. The inside lever is always free, allowing anyone inside the room to exit at any time without a key. The door locks automatically when it closes.
In plain language: you need a key to get in, but you never need one to get out. No button to push, no thumb turn to turn. The room stays secured the moment the door closes behind the last person to enter.
This is distinct from office function (F05), where a key on the outside toggles between locked and unlocked, and from classroom function (F04), where the outside is locked or unlocked by key but the door can be left in either state. Storeroom function has no toggle. Outside is always locked, period.
Where Storeroom Function Belongs
This lock function is the right choice any time a space is unattended, accessed by key only, and should self-secure on door close. Common applications include:
- Schools: Supply closets, custodial rooms, AV storage, and equipment rooms where staff come and go but no one is stationed there
- Healthcare: Pharmaceutical storage, clean supply rooms, medical records rooms, and utility spaces on patient floors
- Retail and commercial: Back-of-house stockrooms, cash handling rooms, and IT/telecom closets
- Industrial and institutional: Tool cribs, chemical storage, electrical and mechanical rooms, and server rooms
- Multi-family: Package rooms, laundry utility closets, and maintenance access points
The defining characteristic of all these spaces is the same: no attendant is present to manage the door state. The lock must do that work automatically.
Storeroom Function and Electrified Hardware
When a storeroom door is integrated into an access control system, the electric version of storeroom function is one of the most common configurations you will encounter on a hardware schedule.
Fail-Secure (Electrically Unlocked)
The most common electrified storeroom configuration is fail-secure: the lock is locked by default and power from the access control system unlocks it when a valid credential is presented. On power loss, the door stays locked from the outside. The inside lever remains free at all times, satisfying egress requirements.
This configuration is appropriate for server rooms, pharmaceutical storage, and most access-controlled interior doors where security must be maintained even during a power outage.
Fail-Safe (Electrically Locked)
In a fail-safe storeroom configuration, the default state is unlocked. Power applied locks the outside lever. On power loss, the door returns to free access. This is less common for true storeroom applications but appears in specific code-driven scenarios such as high-rise stair tower re-entry doors, where IBC requires that occupants can re-enter from the stair side if power fails.
Always confirm the fail condition with the access control engineer before specifying either configuration on a fire-rated opening.
Cylindrical vs. Mortise: Does the Lock Body Matter?
Storeroom function is available in both cylindrical (bored) and mortise lock bodies. The right choice depends on door prep, traffic level, and overall security requirements.
- Cylindrical locks are the common choice for light to medium-duty storeroom doors in schools, offices, and retail. They are less expensive and faster to install, but offer less resistance to forced entry than a full mortise body.
- Mortise locks are preferred for higher-security applications: pharmaceutical rooms, data centers, or any door in a healthcare or institutional environment where the door sees heavy use or is part of a larger master key system. The full mortise body provides a more robust latchbolt and deadbolt combination.
Brands such as Sargent, Corbin Russwin, Hager, and PDQ offer storeroom function across both cylindrical and mortise product lines. Accentra (formerly Yale) also carries this function in both formats and integrates cleanly with electrified trim options for access-controlled openings.
Three Storeroom Function Mistakes That Show Up at Inspection
1. Specifying Office Function When Storeroom Is Required
Office function (F05) lets a keyholder toggle the outside lever between locked and unlocked. In an unattended space, that means the door can be left unlocked by the last person to exit. Storeroom function removes that risk entirely. If the space is unattended and should always be secured, office function is the wrong call.
2. Forgetting the Self-Closing Hardware
Storeroom function only self-secures if the door actually closes and latches. Without a properly adjusted door closer, a storeroom lock provides no real security advantage. Closer selection should be coordinated with the lock hardware set from the beginning, not treated as an afterthought. On fire-rated storeroom doors, a self-closing device is required by NFPA 80 regardless of lock function.
3. Misreading the Trim Function on an Exit Device Application
On a storeroom door that also requires panic hardware (due to occupant load or occupancy type), the outside trim of the exit device must be specified with the correct function. Night latch trim on a panic bar is sometimes confused with storeroom trim. They behave differently, and the wrong choice affects both security and egress compliance. Confirm the trim function against the door schedule before ordering.
Specifying Storeroom Function: What to Confirm Before the Schedule Ships
- Is the space unattended? If yes, storeroom function is almost always the right choice over office function.
- Is the door fire-rated? Confirm the lock carries a fire listing for the required rating and that the assembly includes a self-closing device.
- Is access control required? Determine fail-secure or fail-safe based on life safety and code requirements for the specific opening.
- What is the key system? Storeroom locks should be keyed into the master key system with appropriate levels of access for maintenance, administration, and emergency response.
- Cylindrical or mortise? Match the lock body to the door preparation, security level, and traffic load.
Find Storeroom Function Hardware at DoorwaysPlus
DoorwaysPlus.com carries storeroom function locksets in cylindrical and mortise configurations from Sargent, Corbin Russwin, Hager, PDQ, and Accentra (formerly Yale), along with compatible door closers, electric strikes, and electrified trim options for access-controlled openings. Whether you are building out a new school wing, upgrading a healthcare storage room, or replacing a worn-out cylindrical lock in an industrial facility, our team can help you match the right function to the right opening.
Contact DoorwaysPlus for product recommendations, keying schedules, and hardware set review.