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A classroom door has to lock from the hallway side without ever trapping anyone inside. The Schlage L9457P is a mortise lock built for that job: ANSI function F33, which the maker lists as 9457 Classroom Security with Deadbolt. The lock body mortises into the edge of the door, and the lever, rose and cylinder sit on the faces.
You throw the deadbolt with a key from either side, and throwing it locks the outside lever. Turning the inside lever pulls back the deadbolt and the latchbolt together and frees the outside, so the person inside always has a way out. With the door unlocked, the latchbolt retracts from either side.
This one is the 06 lever with a B rose in Satin Chrome, BHMA 626 (US26D), satin chromium plated over a zinc body, from the Schlage L series. The handing is reversible. The conventional cylinder has 6 pins, is keyed different, and ships with 2 cut keys.
- Backset: 2-3/4 in
- Door thickness: 1-3/4 in
- Faceplate: 8 x 1-1/4 in
- Latch throw: 3/4 in
- Deadbolt throw: 1 in
- Strike 10-072: 4-7/8 in high, 1-1/4 in wide
- Rose: 2-9/16 in; lever: 4-5/8 in; projection: 2-1/2 in
- Dust box: plastic
- Fasteners: combination wood and machine
The maker states that the lock is UL Listed and fire rated for 180 min (3 hr). Schlage covers it with a limited warranty of 3 years on mechanical parts and 1 year on electromechanical parts.
ANSI Function:
F33
Backset:
- 2-3/4 in
BHMA Finish:
626 (US26D) Satin Chromium Plated
Compliance Note:
As stated in manufacturer data; verify the listing for your opening.
Cylinder Type:
Conventional
Deadbolt Throw:
1 in
Dimensions:
2-9/16" Rose with 4-5/8" Lever and 2-1/2" Projection
Door Thickness:
1-3/4 in
Dust Box:
Plastic
Faceplate Size:
- 8 x 1-1/4 in
Fasteners:
Combination (Wood/Machine)
Finish:
Satin Chrome
Finish Code:
626
Finish Family:
Matte Silver
Fire Rated:
Yes
Fire Rating:
- 180 min (3 hr)
Function:
Classroom Security
Handing:
Reversible
Keying:
Keyed Different
Keys:
Cut Keys
Keys Included:
2
Latch Throw:
- 3/4 in
Lever/Knob Design:
06
Manufacturer Function:
9457-Classroom Security w Deadbolt
Manufacturer Warranty:
Limited Warranty: 3 Years Mechanical, 1 Year Electromechanical
Material:
- Zinc
Number of Pins:
- 6
Rose/Escutcheon Design:
B Rose
Series:
Schlage L
Strike Dimensions:
- 4-7/8 in, 1-1/4 in lip
Strike Height:
4-7/8 in
Strike Part Number:
10-072
Strike Width:
1-1/4 in
UL Listing:
- UL Listed
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