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Price
$112.99
PRIME-LINE U 9551 Door Guard Add Extra Security to Your Home, Helps Prevent Forced Entry, Stainless Steel, 1-3/4 in โ€” image 1
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PRIME-LINE U 9551 Door Guard Add Extra Security to Your Home, Helps Prevent Forced Entry, Stainless Steel, 1-3/4 in

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$112.99
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About this item
  • ADDED SECURITY โ€“ Prevent forced entry by reinforcing the weak spot of your door with the non-recessed door lock reinforcer; use to reinforce and repair both metal, fiberglass and wood doors when the latch area has been compromised
  • BUILT TO LAST โ€“ Made of stainless steel, the door lock reinforcement plate comes in a natural finish to fit over a single bore hole on your door
  • EASY INSTALLATION โ€“ All the necessary mounting hardware is included with the lock reinforcement plate for a quick and easy installation; the door reinforcer plate is pre-punched for mounting. Remove the protective film after installation
  • DIMENSIONS โ€“ The door lock reinforcement plate is designed for 1-3/4 inch thick doors only that have a 2-1/8 inch bore hole through the door, with a 2-3/8 inch backset from the edge of the door to the center of the bore holes
  • NOTE โ€“ Make sure to dry fit the 3-7/8 inch wide by 9 inch tall with a 0.03 inch thickness door lock reinforcer before permanently installing and refer to the line art drawing and compare with your needs before purchasing
  • Used to reinforce and repair doors to aide in preventing forced entry
  • 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
  • Stainless steel
Product description

Defender Security U 9551 Stainless Steel Lock and Door Reinforcer assists in preventing forced entry by reinforcing the weak spot of an entry door. It can be used to reinforce and repair both metal and wood doors. Made of solid brass construction, the lock reinforcer plate comes finished in brass. All the necessary mounting hardware is included for a quick and easy installation. The lock reinforcement plate is pre-punched for mounting. The reinforcer is designed for 1-3/8 inch thick doors that have mortise or drive-in latches. It featuress one 2-1/8 inch bore with a 2-3/8 inch backset. The door reinforcer is recessed. Please refer to the line art drawing for dimensions and compare to your needs before purchasing (Not Universal).

Product details
Brand
Prime-Line
Manufacturer
Prime-Line Products
Material
Alloy Steel
Colour
Stainless Steel (If the Intention Was to Describe Material, Not Color)
Size
1-3/4 in.
Weight
0.36 kg
Model number
U 9551
Part number
U 9551
EAN
0049793195517

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
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Excellent
4.5 average rating
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S
Sigalit
๐Ÿ‡ฎ๐Ÿ‡ฑ ยท January 2026
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I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
๐Ÿ‡ฆ๐Ÿ‡บ ยท November 2025
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The package was here in Australia from England in a few days โ€” so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 1โ€“2 of 10 reviews

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