Schlage 23458565 Interior Shim Plate, AD-400

Get a precise, secure lock fit on thin interior doors with the Schlage AD-400 Interior Shim Plate mounting accessory. Designed for doors thinner than 1-3/4", this shim plate (Manufacturer Part Number 23458565) bridges the gap between standard locksets and slim door edges to ensure proper latch alignment and dependable operation. Ideal for locksmiths, installers, and facilities teams working on access control upgrades, the shim minimizes installation time and prevents hardware stress that can lead to premature wear.

This mounting accessory is included in Schlage door thickness kits and is also available individually, making it convenient for single-job replacements or bulk stocking. By maintaining correct lock positioning, the shim supports building security and integrates smoothly with common door hardware and surveillance-focused access control systems. Whether you’re performing routine maintenance or retrofitting locks during a build-out, the AD-400 interior shim plate delivers a clean, professional finish and reliable performance. Add this shim plate to your next installation to improve lock reliability and streamline your security workflow.

• Ensures a secure, flush lock installation on doors thinner than 1-3/4" to prevent misalignment and maintain proper latch engagement
• Simple, time-saving mounting accessory that reduces installation rework for locksmiths and facility managers
• Durable design compatible with Schlage locks and the AD-400 door thickness kit for reliable long-term performance
• Sold individually for flexible stocking and quick replacement during maintenance or retrofit projects
• Helps preserve door hardware aesthetics while supporting access control and overall building security