Master Lock BLC0232DKA4 Storeroom Knob Lockset Grade 2

Product Description

The MASTER LOCK BLC0232DKA4 is a Grade 2 storeroom knob lockset finished in brushed chrome, designed for commercial and light commercial door applications. It features a 6-pin Schlage C type cylinder with a keyed alike configuration, providing consistent key control across multiple doors on the same site. The 2.75-inch backset and steel construction make it a durable, code-compliant choice for storeroom function doors where entry requires a key from the exterior while the interior knob remains locked at all times. Licensed locksmiths, commercial contractors, and facility maintenance technicians are the typical installers.

This lockset is suited for storeroom and utility room doors in commercial buildings, light industrial facilities, and institutional settings. The storeroom function means the exterior knob is always locked and requires a key for entry, while the interior knob is always free for egress. It fits doors up to 1.75 inches thick with a standard 2.75-inch backset, making it compatible with the majority of hollow metal and solid wood commercial door setups found in retrofit and new-construction projects alike.

Key Features

• Storeroom function: exterior knob always locked, interior knob always free for egress
• 6-pin Schlage C type cylinder for enhanced pick resistance and broad key compatibility
• Keyed alike configuration for simplified key management across multiple doors
• Grade 2 lockset per ANSI/BHMA A156.2 for commercial-grade durability
• Brushed chrome finish on steel construction resists corrosion and wear
• UL Listed and meets ANSI/BHMA A156.2 standards

Compatibility

Designed as an OEM-style replacement or new-installation storeroom knob lockset for commercial doors up to 1.75 inches thick with a 2.75-inch backset and standard Schlage C keyway preparation.

Installation Notes

Installation should be performed by a licensed locksmith or qualified commercial door hardware technician familiar with ANSI door prep standards. Verify the door bore pattern matches the standard 2.125-inch cross bore and 1-inch edge bore before installation. Disconnect or de-energize any adjacent access control hardware before servicing the door assembly. Do not force the cylinder or knob spindle during installation, as this can damage the cam mechanism and void the hardware warranty.