Product Overview
Best 9K37W-16-D-S3 Grade 1 Institutional Cylindrical Lock, 16 Lever, D Rose, (SFIC) Small Format Interchangeable Core Prep, Less Cores, S3 4-7/8" ANSI Strike
Building on BEST’s legacy of innovation, the 9K series cylindrical lock combines top-quality materials and exceptional craftsmanship into a tough, dependable, long-lasting security solution. The 9K series was designed to be low maintenance, easy to install, durable, and secure.
Institutional (W) - ANSI Function F87 (*Double Keyed)
*Warning: Locks that secure both sides of the door are controlled by building codes and the Life Safety Code. In an emergency exit situation, failure to quickly unlock the door could be hazardous, or even fatal.
- Pre-assembled heavy-duty chassis - Out of the box and onto the door, the 9K offers quick and easy installation.
- Cast construction lock hub - Protects the lock’s critical components from everyday use and abuse.
- Hardened steel through-bolt studs - Deliver maximum lever torque resistance that stands up to the hardiest hands.
- Proven quality - Tested to exceed 10 times the BHMA Grade 1 criteria by UL.

| Brand | |
|---|---|
| Finishes |
626 Satin Chrome, 622 Matte Black |
| Lock Function |
Institution / Asylum |
| Core |
Not Included - Sold Separately |
| Lever Design |
16 Lever (Curved, No Return) |
| Rose |
D – 3 1/2” Convex |
| Usage |
Heavy Duty |
| ANSI/BHMA Standard |
Listed by BHMA for A156.2, Series 4000, Grade 1 |
| Fire-Rating |
Listed by Underwriters Laboratories for use on 3 Hr, A label for single or double swinging doors |
| ADA Compliance |
Meets ADA requirements - A117.1 Accessibility Code |
| Backset |
2-3/4" |
| Latch |
1/2” throw, deadlocking - 1-1/8" x 2-1/4" face |
| Strike |
S3: Conforms to ANSI A115.2 for 1 3/4” doors (4 7/8” x 1 1/4” with curved lip). |
| Handing |
Non-Handed |
| Door Thickness |
1-3/4" to 2-1/4" |
| Buy American Act Compliance |
Meets Buy American Act - Made in USA |