Mace 80115 MACE Big Jammer Door Brace

by Mace

Product Details

• Product Dimensions: 4.8 x 2.7 x 29.8 inches ; 2.3 pounds
• Shipping Weight: 3 pounds (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S.
• ASIN: B0009V2LU2
• Item model number: 80115 MACE
• Average Customer Review: 4.4 out of 5 stars  See all reviews (39 customer reviews)
• Amazon Best Sellers Rank:
  • #13 in Home Improvement > Hardware > Padlocks & Hasps
  • #37 in Electronics > Accessories & Supplies > Audio & Video Accessories > Media Storage & Organization
• Date first available at Amazon.com: October 2, 2001

Product Description

The Big Jammer Adjustable Door Brace features strong 20 gauge steel and is ideal for home, dorm, apartment or office use. This brace works on both hinged and sliding doors. It adjusts to fit most standard doors, and installs easily under your door knob to provide added security for your home or business. Its collapsible design makes it easy to store when not in use. This brace also includes a Security Bracing Pin for added strength.

Customer Reviews

Most Helpful Customer Reviews

62 of 65 people found the following review helpful:

1.0 out of 5 stars useless, defeated silently in 5 seconds, March 1, 2010

By 

Temur Perkins - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Mace 80115 MACE Big Jammer Door Brace (Electronics)

It arrived today and is going back to Amazon for a refund tomorrow. It looks secure when you put it in place, and feels secure when you test it by pulling inward on the door handle, but test it by going outside pushing on the door and you will be shocked at how easy it is to defeat. The rubber ears on the doorknob end are too flexible and bend out of the way (to the side and down) when you push on the door allowing the door to be very easily opened. The entire top rubber assembly also flexed slightly to the side on the metal pole as it was defeated. It's secured to the end of the metal pole about as well one of those rubber erasers that slip on to the end of your pencil. What's worse is that because the thickest parts of the pole, the top ears and the bottom foot, are made of soft rubber they were silent and made no racket as I pushed on the door. Furthermore since no metal parts hit the floor when it fell to the ground it landed very quietly. The rubber ears are what impacted the floor as it fell to the floor after being defeated, the rubber foot was already on the ground as it fell. I got in the door silently in less than 5 seconds. The tap from a lock bump would be the loudest thing you would hear. Get a puppy from the pound and a 12 gauge instead and sleep well, it's well worth the $400 total initial investment + dog food. I do weigh 240#, but I didn't have to push hard at all to get in. A false sense of security thinking that you would hear some serious racket as this thing got defeated is worse than not having it at all. What I was using before I tried this, and what I will go back to using, was a chair with the legs sitting inside some rubber soled tennis shoes to keep the chair legs from slipping on the floor. Yes I could break the chair with a lot more effort than it took to defeat the MACE Big Jammer, but at least it would make some serious racket as it splintered, and with the door/chair contact being hard material it would also make some noise as I moved the door back and forth trying to get in.

29 of 31 people found the following review helpful:

1.0 out of 5 stars Don't waste your money, October 12, 2010

By 

K. Johnson (United States) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Mace 80115 MACE Big Jammer Door Brace (Electronics)

Tried this on our front door upon receiving it and my 11 yr old daughter was able to push the door in. The reason is the poor choice of materials used in the fork portion holding the door knob. Its soft rubber and when the door starts to press against it, it bends and eventually gives way. This is a complete waste of money. I wasted mine, don't waste yours.

14 of 17 people found the following review helpful:

5.0 out of 5 stars Big Jammer Door Brace..., January 18, 2007

By 

E. Fitzgerald "Ed" (Chi) - See all my reviews

saves the day. It makes my family sleep easier and more secure at night. We're in a two unit apartment building and there is an entry door and hall before our units. The last person in at night places the brace under the knob, so we all know we've eliminated the threat of someone coming in though the front door.

If someone were to try to force the door, (I don't think theres a chance of them getting through the jammer) the worst thing that would happen is that the knob would tighten, making it difficult to turn. We solved this problem after a trial run and found that if you unscrew the knob and reassemble it in the door, it works fine. We think it's due to the stress of the knob against the door. I still can't see any part of the door failing either.

Good Luck!!