How Do Door Hardware Finish and Function Charts Differ?

Function describes behavior; finish describes appearance

Those two fields solve different problems. A matching finish does not make two locks functionally interchangeable.

Common function	ANSI reference in one current commercial series	Inside	Outside	Typical use
Passage	F75	Lever retracts latch at all times	Lever retracts latch at all times	Hall or closet
Privacy	F76	Inside action releases the lock	Push-button lock with outside emergency release	Bedroom or bathroom
Entrance/office	F82	Lever remains free	Button or key controls the outside lever	Office or controlled room
Entrance	F109	Lever remains free	Key required until manually unlocked	Controlled entry
Classroom	F84	Lever remains free	Key locks or unlocks the outside lever	Traditional classroom function
Classroom security	F110	Lever remains free; key can secure outside lever	Key controls the outside lever	Classroom lockdown from inside
Storeroom	F86	Lever remains free	Always locked; key retracts latch	Supply or service room
Communicating	F80	Keyed control	Keyed control	Connecting rooms; verify egress needs
Institution	F87	Fixed/inoperable lever	Fixed/inoperable lever; key retracts latch	Specialized controlled opening

The ANSI references above are the cross-reference codes published in the current Schlage ND Series catalog, checked August 20, 2026. They describe that product family’s listed functions; they are not universal ordering numbers. The same catalog distinguishes mechanically similar functions such as classroom, storeroom, classroom security, communicating, and institution.

Choose behavior before a product number

Describe the opening in plain language first: whether either lever must remain free, whether a key can leave the outside lever unlocked, whether occupants can secure the door from inside, and how authorized entry works. Schlage’s lock-functions lesson recommends specifying the required behavior instead of relying on a function nickname alone.

Classroom and storeroom are not interchangeable. A traditional classroom function can be left unlocked from the outside with a key. A storeroom function stays locked on the outside while permitting free egress from inside. Current classroom-security guidance may call for an inside-locking function or another listed system; confirm the adopted code, district standard, fire-door listing, and hardware manufacturer’s instructions.

Finish codes are a separate lookup

Common U.S. finish numbers such as 605, 606, 613, 625, and 626 appear across current commercial catalogs, but the number identifies an appearance/material system rather than a lock function. A finish match does not establish compatible chassis dimensions, handing, cylinder format, fire listing, or function.

Finish numbers vary by standards family and manufacturer. Confirm the exact code on the current product and the proposed replacement; do not match from a screen color alone.

Method: This page replaces the domain’s historical function_chart.pdf with an HTML reference that can be corrected and dated. It was checked against current manufacturer documentation on August 20, 2026.