Don-jo CW310B Wrap Around Cylindrical Lock Plate Oil Rubbed Bronze

Product Description

The DON-JO CW310B is a classic wrap around reinforcement plate designed for cylindrical door locks. It protects the door face around the lock bore, reducing the risk of forced-entry damage and kick-in failure at the latch area. Sized for a 2-3/4 inch backset and a 1-3/8 inch door thickness, the CW310B ships ready for direct installation without field modification. The oil rubbed bronze finish provides a dark, matte appearance suited to period-style and transitional door hardware. At 0.8 pounds, the plate is lightweight but adds meaningful structural reinforcement to the door edge and face.

This wrap around plate is used in residential and light commercial applications wherever a cylindrical lockset requires additional door protection. Typical install scenarios include entry doors, apartment doors, and interior security doors where the door face is vulnerable to splitting or prying around the lock cylinder. The plate suits new construction and retrofit projects where the existing door prep matches a standard cylindrical lock bore pattern with a 2-3/4 inch backset.

Key Features

• Reinforces door face around cylindrical lock bore to resist forced entry
• Sized for 2-3/4 inch backset and 1-3/8 inch door thickness
• Oil rubbed bronze finish for a dark matte appearance
• Compact profile at 9.8 inches long by 4.25 inches wide by 1.8 inches tall
• Lightweight at 0.8 pounds for easy single-tech installation
• Sold individually, one plate per unit

Compatibility

Designed as an OEM-style reinforcement plate for cylindrical door locksets installed in doors with a 1-3/8 inch thickness and a 2-3/4 inch backset.

Installation Notes

Installation is typically performed by a licensed locksmith or finish carpenter. Remove the existing lockset hardware before fitting the wrap around plate to the door face. Confirm door thickness and backset measurement match the plate specifications before drilling or fastening. Follow local building and fire-egress codes when reinforcing hardware on rated or corridor doors.