Description The Lenlok 4323 Narrow Dual Grip Roller Door Lock, a premium metal replacement lock for residential roller garage doors. It features a modern, narrow-style chrome fascia with integrated finger grips for easier manual door operation. Specification Manufacturer: Lenlok (A Lenlok/CBS brand) Model Number: 4323-C4-KD (Keyed To Differ) Unit Weight: 300g (0.3 kg) Fascia Dimensions: ~255mm (L) x 34mm (W) Lock Body Depth (Thickness): Approximately 30mm overall, including the barrel mechanism. The body itself is designed for minimum protrusion to be smaller than previous models. body itself is designed for minimum protrusion to be smaller than previous models. Body Depth: Designed for minimum protrusion (smaller than previous 3323 models) Locking Throw: 19mm travel on galvanised steel arms Cylinder Type: C4 4-pin cylinder (Compatible with LW4 keyways) Compatibility The 4323 is a versatile retrofit option designed to replace older, bulkier locks. Retrofit: Directly replaces earlier Lenlok 3323 models and matches the mounting footprints of common industry standards. Door Brands: Commonly used on Gliderol, Stramit, and Steel-Line roller doors. Keying: Can be keyed alike to other C4-compatible locks in your home (e.g., entrance sets and padlocks). Maintenance Lubrication: Periodically apply a silicone-based spray lubricant to the keyhole and the sliding internal arms every 6–12 months. Avoid using heavy grease or petroleum-based oils (like standard WD-40), which can attract grit and eventually wear down the mechanism. Cleaning: Wipe the chrome fascia with a soft, damp cloth to maintain its bright finish and prevent corrosion from salt or environmental buildup. Security Check: Ensure the tamper-proof mounting screws remain tight and the locking arms fully engage with the door tracks without binding. ⚠️ Disclaimer The company does not take responsibility for improper installation or usage of this product. We strongly advise that installation be carried out by a qualified professional technician.