Beefy Thick Door Lock Extension Kit For Deep Doors, Adjustable Deadbolt Tailpiece Set For 1 To 4 Inch Doors, Fits SC1 SC4 KW1 Keyways, Includes Long Screws, Heavy Duty Door Lock Repair Kit For Patio And Security Doors

Heavy-Duty Thick Door Lock Extension Kit for Deep Doors
✔️ Deep-door ready for 1 to 4 in doors; SC1/SC4/KW1; 21-piece

This thick door extension kit extends standard deadbolts on deep or oversized doors, perfect for front doors, patios, and entryways thicker than standard frames. It lets you upgrade existing hardware without replacing the entire lockset.

✅ 21-piece thick door kit for 1 to 4 inch thick doors (25.4-101.6 mm)
✅ Compatible with SC1, SC4, KW1 keyways for common residential cylinders
✅ Includes deadbolt tailpiece extensions, lock tailpiece replacements, and long screws
✅ Works as a thick door conversion kit without replacing the entire lockset; supports deadbolt, knob, and handle installations
✅ Heavy-duty components for patio and security doors
✅ Colorful finish options for easy styling

💡 What is a thick door lock extension kit used for? It helps upgrade deep doors by extending deadbolts and tailpieces without replacing the full lockset. - extends tailpieces for 1 to 4 inch thick doors (25.4-101.6 mm) - supports SC1, SC4, KW1 keyways for common residential cylinders - easy install with existing knob/handle setups - saves time and money by avoiding full lockset replacement