The Falcon A30775-000-00 is the OEM thin door kit for the Falcon T Series cylindrical lock, documented in the Falcon T Series Parts Manual under the Strikes and Dust Boxes diagram. The kit contains two spacers and is designed for door thicknesses from 1-3/8" to 1-5/8" - doors that fall below the standard T Series 1-3/4" to 2-1/8" thickness range. It is compatible with all 25 Falcon T Series functions: T101 through T881-IC, covering conventional, IC (interchangeable core), and electrified configurations.

No finish specification required. The spacers are internal mounting components not visible on the door face.

Why the Falcon T Series Needs a Thin Door Kit

The Falcon T Series standard installation is designed around a door thickness range of 1-3/4" to 2-1/8". This covers the vast majority of commercial hollow metal doors. The lock chassis is secured to the door by threaded mounting nuts, and the completely preassembled outer trim and inner spindle assembly are through-bolted over the chassis using two 10-32 screws.

That through-bolt system is calibrated for 1-3/4" as the minimum door thickness. On a door thinner than 1-3/4" - interior hollow metal doors, some wood doors, older lighter-gauge commercial doors, and residential doors in retrofit applications - the two through-bolts reach full thread engagement before the outer trim and inner spindle have clamped the chassis with adequate face contact. The result is a lock that sits loose on the door. The trim can rock slightly under use, accelerating wear on the spindle and chassis interfaces.

The A30775-000-00 thin door kit provides the 2 spacers that fill that gap, allowing the through-bolts to apply correct clamping force at 1-3/8" to 1-5/8" door thickness. The spacers seat between the mounting surfaces and the door face, taking up the dimensional difference so the lock mounts rigidly at the thinner door thickness.

Falcon T Series: What This Lock Is

Per the official Falcon T Series catalog, the T Series is described as "the most versatile lockset in the industry" - an extra-heavy-duty cylindrical lock that accepts any manufacturer's cylinder and can be rekeyed by removing the cylinder without disassembling the lock from the door.

Key T Series specifications confirmed across official product listings: ANSI/BHMA A156.2, Series 4000, Grade 1. UL listed for 3-hour A label fire doors. Non-handed - works on both left-hand and right-hand door swings without ordering separately. Standard backset 2-3/4" (2-3/8" also available; 5" backset available via A22161-005-10 link). Mechanism parts are brass or cold formed steel, zinc plated and dichromated for rust resistance. Springs are stainless steel.

The T Series carries the Pressure Release feature: when the outside lever is in the locked state, it is not rigid - the lever can move without operating the latch bolt. This prevents lever damage when someone forces a locked lever and protects the internal mechanism from the resulting torque.

Falcon Cylinder Parts: Thin Door Kit Coverage Across the T Series Catalog

The A30775-000-00 is a universal kit across the entire T Series function family because the mounting mechanism is identical across all functions. The spacers address the door thickness dimension, which is independent of what function the lock performs.

Functions covered: T101 passage, T291 hospital privacy, T301 privacy, T351/T351-IC closet, T381/T381-IC classroom security, T411/T411-IC asylum, T501/T501-IC entry, T511/T511-IC entry/office, T521/T521-IC office, T561/T561-IC classroom, T571/T571-IC dormitory, T581/T581-IC storeroom, T851/T851-IC electrified fail safe, and T881/T881-IC electrified fail secure. One kit, all functions.