
I spend four hours trying to install the dual cylinder dead bolt lock. The problem is the two bolt screws that attached to the other cylinder dead bolt. After tighten the two bolt screws, I wasn't able turn the strike bolt with the key. After loosening the bolt screws the key was able to turn freely. However, the cylinder lock was loosely fitted around the housing that holds the cylinder is unsecured. My conclusion there is a defective design issue with this lock. I can not recommend this product. Buyer beware. Cheap price comes with a price.

Ensure Ultimate Door Security With Door Reinforcement Lock – Child Safety 4 Screw Lock For Inward Swinging Doors
41 Review

ZEKOO Bypass Sliding Barn Door Hardware Kit For Double Doors, Single Track, Flat Track Roller, One-Piece Rail - Available In 4FT To 12FT Lengths, Perfect For Low Ceilings (6FT Single Track Bypass)
34 Review

Industrial Bigwheel Hangers Sliding Barn Door Kit - 6.6Ft Heavy Duty, 4-18FT Black Hardware, Smooth & Quiet Operation, Easy To Install (Fits 36"-40")
40 Review

ZEKOO 6FT Single Track Bypass Barn Door Hardware Kit, Double Sliding Doors Overlapping For Low Ceiling
35 Review

🌳 Efficient Drip-less Wood Glue Dispenser, 16 Oz Bottle
8 Review

Pack Of 1 Natural Wood Color 8 Ounce Bottle Gorilla Wood Glue
42 Review

💪 Bondic UV Liquid Plastic Welder - Fast Cure, Strong Adhesive Repair Kit for Home, Garage, Outdoors, etc. - Complete Starter Set (LED Light & Liquid Cartridge in Compact Tin Case)
9 Review

Silver Holographic Stars Glitter Grout Tile Additive 100G - Easy To Use For Tiles, Bathroom, Wet Room & Kitchen
14 Review