The Original - Patented
The Original StrongJamb Armor Plate
A quarter inch of American steel, mortised flush into your door jamb and anchored to the studs behind it. New to StrongJamb? Start with the DIY Kit - it includes the jig you need to install. Already have the kit? Add plates below.
Little but mighty.
The Armor Plate is a formidable first line of defense for any ordinary jamb. Using our Original StrongJamb System and fifty years of door experience, we retrofit that reinforcement into a smaller, far more versatile plate. It solves locking security after a break-in, corrects the adjustment on doors that never hung right, and repairs the opening at the same time - all with traditional or smart lock hardware.
Strong, and not ugly.
Unlike aftermarket plates that just bolt onto the surface, the Armor Plate is embedded into the jamb - superior security with an integrated, finished look. It cleans up old, poorly chiseled lock points, corrects the adjustment on doors that never hung right, and mortises in flush, so once painted you would not know it was there.
Patented. Made in the USA.
Works with the lock you already trust - even the smart one.
The Armor Plate accommodates smart locks and electronic systems better than any competitor, so you keep locking your door from your phone. It just makes the frame worthy of the lock you chose.
Why the Armor Plate wins
Not just another aftermarket security plate.
Cleaner, built-in
Never surface-mounted. It's embedded into the jamb for superior security and an integrated, finished appearance - and it cleans up old, poorly chiseled lock points along the way.
Fits your hardware
Machined to accommodate the vast majority of residential bolts and latch points, with superior adjustment for doors that never hung right.
Anchors into the framing
Rear holes take 3-inch or longer screws that drive force into the structural framing, not the jamb edge - twice the fasteners of the industry standard.
Watch us put it to the test.
Real installs, real doors.
Buy direct
Already have the kit? Get more plates.
A quarter-inch of American steel, mortised flush into your jamb and anchored to the studs behind it. Works with the lock you already own - including smart locks and electronic systems, handled better than our competitors. Patented, made in the USA. You'll need our DIY Kit (jig included) to install - if you don't have one yet, grab the kit first.
New to StrongJamb? You'll need the DIY Kit first - it includes the jig you need to install. Ships from Dayton, Ohio.
View full detailsNew here? Start with the DIY Kit.
The Armor Plate on its own is right if you already own our router jig. New to StrongJamb? You'll need the DIY Kit first - it includes the jig and everything to install. Once you have the kit, order as many plates as you like.
Trusted by homeowners and businesses in Dayton
Fifty years of door experience, now protecting doors across Ohio.
Prospeed professionally handled the procurement of a sliding door and 2 sliding windows for my Centerville condo (I am an out-of-town owner) and installed them with me on site. Joe Pollard and his crew performed the work and left the condo in good shape. Greg Pollard made sure I was satisfied. I recommend Prospeed for door and window replacement.
Kim is absolutely one of the greatest people I've ever met. The passion and care that they put into their product is second to none and we are truly blessed to know them.
These guys are amazing! If I could give them 10 stars I would!