Reddit reviews Defender Security U 9551 Lock and Door Reinforcer, Stainless Steel – Fits 1-3/4” Doors, 2-3/8” Backset, Reinforce & Repair Wood/Metal Doors, Add Extra Security to Your Home,Helps Prevent Forced Entry
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REINFORCE AND REPAIR – Reinforce weak spots on entry doors and repair damaged areas with this stainless-steel lock and door reinforcer.ADDITIONAL HOME SECURITY – Securing the weak spot of an entry door with a stainless-steel lock and door reinforcer can add additional security to your door and assist with preventing forced entry.APPLICATIONS – This combo lock and door reinforcer can be used on wood or metal doors with mortise or drive-in latches. It also accommodates key-in knob locksets or deadbolts.EASY INSTALLATION – Installation is quick and easy, and all fasteners are included – extra security and peace of mind can be achieved in just minutes!FITS – 1-3/4 in. thick doors, 2-1/8 in. bores, 2-3/8 in. backset, 3-7/8 in. width x 9 in. height.Used to reinforce and repair doors to aide in preventing forced entryFits 1-3/4 in. thick doors, 2-1/8 in. bores, 2-3/8 in. backset, 3-7/8 in. width x 9 in. heightStainless steelStainless steel
Assuming a solid core door. If a hollow core door, first replace with a good metal exterior solid core door and then see below.