GUARD DOG SECURITY Door Jammer, Sliding Door Stopper, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different adjustments (White 2 Pack. GUARD DOG SECURITY Door Jammer, Sliding Door Stopper with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White) 1 4 out of 5 Stars. Read customer reviews and common Questions and Answers. Chat now. Five years in development, the unique two-piece design utilizes both the strength of the existing floor and a space age polymer – the identical material in US military fighter planes. 6 out of 5 stars 1,785. 4. 1 reviews. The dual function security bar made from high grade iron that can secure just about any hinged doors,GUARD DOG SECURITY Door Jammer, Sliding Door Stopper with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White) Sponsored. 99. I’ve used it in apartments and houses, even when an electronic security system was present. Pros. 4 out of 5 stars 298. 50+ bought in past month. Find helpful customer reviews and review ratings for Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different adjustments (Black 2 Pack) at Amazon. With the door closed, slide the handle of. With its rekeying tech and multiple finishes, Kwikset’s often used in homes and apartment buildings. To open interior doors that don’t use high-level security doorknobs, you’ll have to take the doorknobs off and then dismantle the lock. Quantity. 1-48 of over 1,000 results for "door jammer security" Results Price and other details may vary based on product size and color. Showing 30 of 1237. $32. 6 total votes. Ideally, the door will have a lock of some kind on the knob or handle and a sturdy, secure deadbolt. 06. List: $28. By the way, if you want to burglar-proof your whole home (and not just the doors), make sure you check out these simple DIY home security hacks. Foot Distance from Door . Strongest Wall Door Handle Stopper 2" Set. 4 out of 5 stars 669 SABRE Adjustable 2-in-1 Door Security Bar, Door Stop Bar Secures Onto Door Knob, Strong Scratch-Proof Grip, Steady Against Floor, Removable Door Knob Top For Sliding Door Use, Portable & Easy to Use 4. 79. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 1 Pack) 4. Or fastest delivery Fri, Nov 10 . 4 out of 5 stars 738Guard Dog Security 2-in-1 Adjustable Door Knob Jammer & Sliding Door Security Bar. Or fastest delivery Wed, Nov 1. Taskmaster Polished Brass Security Door. To set the length, I simply approximated the distance between the door. (70 cm. 99 $ 29. Ideally, the door will have a lock of some kind on the knob or handle and a sturdy, secure deadbolt. $ 31 59. 5 out of 5 stars 1,483. Buy SABRE Adjustable 2-in-1 Door Security Bar, Door Stop Bar Secures Onto Door Knob, Strong Scratch-Proof Grip, Steady Against Floor, Removable Door Knob Top For Sliding Door Use, Portable & Easy to Use: Sliding Door Hardware - Amazon. Forget Standard Door Chains – Use a Strike Plate Lock Instead. #2. 5 out of 5 stars 441 $32. 6 out of 5 stars 658. Read honest and. Door security bar features innovative folding design for compact storage and portability, Adjusts from 25-1/2in to 43-1/2in for use on most hinged and sliding doors. Premade Premium Siamese Power and Video Cable (2-Pack) 50 ft. 1 reviews. 39-43 in. Browse door knobs now at acehardware. Portable Door Lock, Hotel Door Locks, Door Jammer Door Stopper, Anti-Theft Door Blocker, Door Lock Brace, Home Security Door Locker, Door Lockdown Security Device $19. 99 $ 49. When you buy a Security Man SecurityMan 3-in-1 Door Stopper/Door Knob Jammer, Sliding Door Block/Security Bar, & Alarm with 120db Loud Alert Siren - Durable & Rugged Latch online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered. While a high-quality door jammer can withstand substantial forces when used properly, much depends on the actual model and the. The VIRIDI security door locks are reliable and easy to use. It’s made only of plastic without any plastic or rubber materials to be sturdy and withstand over 2,500 pounds of force – the weight of a bison. 36 Jamb Extension Kit 6-9/16. safety tips; prohibited items;5. Door jammer is constructed with 20-gauge steel for strength and security Measurements: Door bar adjusts from 27-1/2 in. See all 7 - listings for this product. 50/Count) Get it as soon as Thursday, Jul 6 Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 1 Pack) dummy 2-in-1 Door Security Bar & Sliding Patio 28″ Door Stopper Security Jammer Bar Child Proof Adjustable Constructed of High Grade Iron Window Doors Security Bars, White The 3-in-1 Adjustable Alarm Jammier and Sliding Patio Door Security Bar Latch is a heavy duty; dual function security bar made from high grade iron withstand 350lbs of force with an ear piercing 120dB siren that will sound off as soon as an intruder attempts to force the door open. 81. 99 $ 29. BuddyBar Door Jammer Real World Use. $29. Skip to main content. 1 reviews. (70 cm. 25"-43. You save. 99. 900+ bought in past month. SecuraDoor works with door knob heights that comply to the international building code. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (Black, 1 Pack) 4. 19 to 52 Inch,In 1 Door Stoppers Barricade Security Bar Onto Door Knob,Sliding Glass Door Lock Bar for Patio Door,Sliding Door,Window,Removable Security Jammer Bar. You'll have to improvise if the door (and door knob) are somewhat higher than normal, such as when the door leads to a lower area (example: step-down from a garage to inside the house). Limit 3 per customer. 59 after $25 OFF your total qualifying purchase upon opening a new card. Popular items in this category. 99. Available for 3+ day shipping 3+ day shipping. GUARD DOG SECURITY Door Jammer, Sliding Door Stopper with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White) 1 4 out of 5 Stars. The DunnsZ 2-in-1 Adjustable Security Bar comes Complete with 2 BONUS Door Stoppers. current price $49. 31-35 in. 2 out of 5 Stars. 5 4. GiliGiliso Rocker Bar Door Lock, Durable Door Lock Security, Rocker Bar Door Guard For Front Doors, Home Security. Innovative portable devices designed to protect your home and family from unwanted intruders. Popular items in this category. Securityman 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar. Brinks 675-83001 Home Security Bar. 4. 00. 6 out of 5 stars 1,891. Drop Open Bar Holder Steel U Bracket as Security Door Reinforcement, Door Jammer, Tool Hanger for Your Home. Write a. Tall High Grade Iron: Fake Dummy Security Dome Camera with LED Light - White: 50 ft. bore sizes, with a backset of 2-3/8 in, and that are separate from each other by 5-1/2 in. List: $39. 5 reviews. Or fastest delivery Tue, Oct 10 . Shop our selection of Door Stops & Wall Protectors in the section of Door Hardware in the Building Materials Department at The Home Depot CanadaGlass Door Knobs, Wooden Door Knobs, Copper Door Knobs and Many More . Add. 6 out of 5 stars 6,008. 4 offers from $18. It boasts SmartKey features, so you can use the same key as your deadbolt. Credit Offered* Learn. Small Business. 1 reviews. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 1 Pack) 4. current price $7. GUARD DOG SECURITY Door Jammer, Sliding Door Stopper, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments Black. 7 out of 5 stars 11. 69. FREE delivery Tue, Oct 10 on $35 of items shipped by Amazon. This item: HoneSecur 2 Pack 2-in-1 Door Security Bar & Sliding Patio 28″ Door Stopper Security Jammer Bar Child Proof Adjustable Constructed of High Grade Iron Window Doors Security Bars, White $33. It adjusts to fit most standard doors, and installs easily under your door knob to provide added security for your home or business. Price when purchased online. current price $32. FREE delivery Thu, Sep 14 . 500+ bought in past month. About this item. Guard Dog Security 1131012 Door Keeper Expandable Door Stopper Bar with Alarm, Blue. Available for 2-day shipping 2-day shipping. This is considerably cheaper than the Buddybar. 99. Thanks to a patented system of hinges and angles, force from outside the door is redirected downwards, wedging DoorJammer firmly into the ground. 5 cm) to 41. $29. 99. Read. The Securityman 2-in-1 also has the largest adjustment range of all the door jammers on our list, adjusting from a height of 22. 5 cm) to 41. 1 reviews. Masterlock Door Jammer by Securadoor - Amazon. Door jammers are moderately effective security devices. FREE delivery Mon, Jul 10. The Big Jammer Adjustable Door Brace features strong 20 gauge steel and is ideal for home, dorm, apartment or office use. 6 out of 5 stars 1,882. It might seem kind of silly, but it’s true. Popular items in this category. Available for 3+ day shipping 3+ day shipping. 1-Adjustable Door Knob Jammer, Sliding Patio Door Security Bar Constructed of 43 in. 4 4. $29. As such, you can install it fast without the need for cutting. SecurityMan 2-in-1 Adjustable Door Knob Jammer and Sliding Patio Security Bar. Read. com Enter Email Address GOIf you want to secure a door with windows, I highly recommend you check out this comprehensive guide. Foot Distance from Door. 3. $49. Things to Consider When Choosing the Best Door Security Bars. 4 out of 5 stars 243. The SecurityMan SECURITYBARB is a heavy duty, 2-in-1 Door Security Bar and Sliding Door Security Bar. 7”. Limited time deal. Small Business. Read honest and unbiased product reviews from our users. 2-in-1 Adjustable Door Knob Jammer and Sliding Patio Door Security Bar - High Grade Iron (Black) (21)Designed to secure hinged doors, sliding doors, and/or windows; Can be adjusted to ensure full contact and strong grip; Made of high-quality iron to. 99. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 1 Pack) 4. 99. Prevent unwanted forced entry. In our research to find the best door security devices of 2021, we selected the BuddyBar Door Jammer as the most versatile. CALCHELE Door Security Bar & Sliding Patio Door Security Bar 2 Pack - Door Stoppers - Heavy Duty Door Jammer Bar - Adjustable Window Security Bar for Front Door, Apartment, Hotel Room Black. 99. 6 4. 99. See more1-48 of over 1,000 results for "door jammer security" Results Price and other details may vary based on product size and color. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 1 Pack) 4. Remove pins to adjust length of door bar,osition padded foot distanced from door based on knob height: 27-31 in. Small Business. 31-35 in. 99. Add. 1 reviews. $ 1499. 6 out of 5 stars 1,572 ratings. They utilize a padded foot grip to protect the floor and keep the jammer steady. 99 $ 49. Ace Hardware offers a wide range of door and cabinet hardware security that gives you the peace of mind you deserve, with features like a doorknob and deadbolt set that's easy to install and affordable and helps protect your family from break-ins. 99. They are also jam-proof and have a long lasting design. Limit 3 per customer. 97 (37)Guard Dog Security 2-in-1 Adjustable Door Knob Jammer and Sliding Patio Door Security Bar with Alarm (Pack of 2) Condition New Color - Select - Blue Teal White BlackGuard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different adjustments (White 2 Pack) View on Amazon. Similar items you might like. SecurityMan Adjustable Door Knob Alarm Jammer & Sliding Patio Door White Security Bar with 120Db Loud Alert Siren, Durable & Rugged Iron, Sturdy On Most Floors & Windows (Against Scratches) Patio Zinc Twist-in Sliding Door Lock. USD $56. 99 $18. Master Lock 265D White Door Security Bar. Find helpful customer reviews and review ratings for Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different adjustments (White w/Alarm) at Amazon. Read more about the Door Jammer. 99 Get it as soon as Wednesday, Aug 9SecurityMan 3-in-1 Door Stopper/Door Knob Jammer, Sliding Door Block/Security Bar, & Alarm with 120db Loud Alert Siren - Durable & Rugged Latch. Compare Compare. 7 out of 5 stars 1,904. Small Business. Knob Height; 8-9 in. of beautifully powder coated steel with no plastic parts. Discover more about the. RELIABILT 2-3/5-in Satin Nickel Hinge Pin Door Stop (5-Pack) DIY and professional customers depend on the long ReliaBilt brand history for quality product, reliability and technology for all your hardware needs. 6 stars out of 8 reviews 8 reviews. Available for 3+ day shipping 3+ day shipping. If you are looking for a security bar that will fit your door—no matter what type of door—then Securityman’s 2-in-1 Adjustable Door Knob Jammer may be your best bet! Most Versatile: BuddyBar Door Jammer. Condition New. Top door knob jam is easily removed for sliding door application. Save 11% with coupon. 5. Was: $18. comDoor Security Bar, Rerishom Door Stoppers Security bar,Heavy Duty Door Lock Security Door Jammer Door Stopper for Apartment, Hotel Room,Screen Door Hardware, 2 Pack 4. current price $56. In fact, you. 50+ bought in past month. The Brinks Home Security door jammer is adjustable in height from 25" - 43", the door jammer can increase your feeling of security in the home and fits both hinged and sliding doors. They offer a quick and simple way to add extra security to a standard residential door. Heavy Duty Door Jammer Bar - Adjustable Window Doors Security Bars for Sliding Glass Door, Window, Front Door,. FREE delivery Fri, Nov 17. According to the Chula Vista Residential Burglary Reduction Project, the front door of a home is the preferred entry point for the majority of housebreakers. $29. Another easy solution is to put a sock or two, or a towel under the door. current price $49. Ives Fs18l Security Floor Door Stop 3 1/2" Height 2" Diameter -. ️ 300 POUNDS OF FORCE: Designed to prevent forced entry, will enhance your security at home, in hotels, or for your business. USD $56. 00. GUARD DOG SECURITY Door Jammer, Sliding Door Stopper with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White) 1 4 out of 5 Stars. 5 out of 5 stars 477. $49. WHATS INCLUDED: Security Safety Bar (3 parts), Door Caps (2pcs), Sliding Patio Door & Window Caps (2pcs), User Guide, 12 Month Warranty, & Friendly. 348. Add. ) for sliding doors; Flexible handle strap adjusts for secure and convenient storage. 1 5 out of 5 Stars. $29. 99. Each measures W4" x L2" (10 x 5cm), and both sides are equipped with strong elastic straps, ensures the adaptability. The Master Lock 270D: Adjustable Hinged and Sliding Door Security Bar makes it easier than ever to feel safe in any location. Get $5 off when you sign up for emails with savings and tips. GUARD DOG SECURITY Door Jammer, Sliding Door Stopper with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White) 1 4 out of 5 Stars. Just Peel & Stick. Premade Premium Siamese Power and Video Cable (4-Pack) Price $ 20 39 /box $ 22 39 /carton $ 28 43. The door stopper security bar is also easily adjustable. com. The dual function security bar made from high grade iron that can secure just about any hinged doors,GUARD DOG SECURITY Door Jammer, Sliding Door Stopper with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White) Sponsored. √ Weighs 2. 97 $ 18 . Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 1 Pack) 4. 99. 1 reviews. Available for 3+ day shipping 3+ day shipping. 400+ bought in past month. 99. 6 out of 5 stars 1,897 $ 29 . Compare. 50” in sliding doors. The Mace Big Jammer Door Security Brace is ideal for home, apartment, dorm, and office use. 5inch Adjustable Locking Window Safety Bar with. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 1 Pack) 4. 6 out of 5 stars 1,892. Schlage L9040: For extra security, try this mortise lock. $29. Tall High Grade Iron Black (6) Questions & Answers (2) +4 Hover. Merchant Video . Remove pins to adjust length of door bar,osition padded foot distanced from door based on knob height: 27-31 in. com FREE DELIVERY possible on eligible purchases Door jammer is twice as strong as our standard door bar, with 20-guage steel construction Security bar for sliding glass door that can also secure hinged, patio and other doors Rugged, easy-to-install protection for small apartments, dorm rooms and other tight spaces To make your doors close quietly lube up the door latch with a lubricant like WD-40. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 1 Pack) 4. Knob Height; 11-12 in. 4. GUARD DOG SECURITY Door Jammer, Sliding Door Stopper with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White) 1 4 out of 5 Stars. 7 reviewsAceMining Upgraded Door Security Bar & Sliding Patio Door Security Bar, Heavy Duty Security Door Stoppers Adjustable Door Jammer Security Bar for Home, Apartment, Travel (1 Pack,White) 833. $49. 25 x 5. 99. 99 $ 56 . Find helpful customer reviews and review ratings for Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 2 Pack) at Amazon. GUARD DOG SECURITY Door Jammer, Sliding Door Stopper with Alarm, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White) Sponsored. Praised by locksmiths, security. Best seller. $32. Available for 3+ day shipping 3+ day shipping. They gave us a strong door knob system. 00. While it may sound simple, the most common way burglars enter homes is through an unlocked door or window. $7. 99 $ 29. . Schlage Addison Trim Matte Black Entry Exterior Door Handleset and Plymouth Door Knob Rated AAA Security. 99. Check out these related products. Guard Dog Security; Prime. 6 out of 5 Stars. 9. 5" FROM THE FLOOR-----THE BUDDYBAR AT THE TOP OF THE PAGE, WILL. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (White, 1 Pack) 4. 99 ($0. 6 out of 5 stars 659 ratingsTo make your doors close quietly lube up the door latch with a lubricant like WD-40. Guard Dog Security 2-in-1 Adjustable Door Knob Jammer and Sliding Patio Door Security Bar, Black. Model # MFC-EZA-20000. See more "Close Cart" KEYCHAIN; FOR RUNNING;. and it is 10-7/8 in. White Door Security Bar, 2 in 1 Front Door Stoppers, Patio Sliding Glass Door Security Bar Stick, Adjustable Door Knob Jammer Barricade, Adjustable for Hinged and Sliding Doors, White . 6 660 ratings | 10 answered questions 100+ bought in past month $3299 Get Fast, Free Shipping with Amazon Prime FREE Returns Color: Black Size: 1 Pack About this item The Buddybar Door Jammer Is Simply The Strongest Home Security Bar On The Market. About 20 years ago,. Knob Height; 9-10 in. Our findings indicated that the models with the best user reviews included several similar designs that were lightweight, easy to use, and worked with different flooring types. EASY TO USE: Easily props under door knob or between sliding windows/doors and takes seconds to remove. Knob Height; 11-12 in. This is the most versatile door security bar because the product can work on standard doors as well as sliding glass doors. ️ DUAL FUNCTION: Top piece is easily removed for sliding door security. 99Ideal Security SK110 SK110W Child-Proof Patio Door Security Bar. RELIABILT. 6) 4. com. current price $49. Walmart. 0. 99. Read. 99 - $56. 99. $2599 ($13. The Buddybar is 8. Please enter in your email address in the following format: [email protected] 3-in-1 Door Stopper/Door Knob Jammer, Sliding Door Block/Security Bar, & Alarm with 120db Loud Alert Siren - Durable & Rugged Latch. Report: Report seller. Door Jamb Security & Repair Kits Mini Combo Set (White) - Protects Jamb and Lock Area, Easy Installation, Fits Any Jamb Thickness. 8 inches x 2. current price $49. 6 out of 5 stars 1,897. Compare $ 12. Limited time deal. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different adjustments (Black w/Alarm) 4. 2 out of 5 Stars. 39-43 in. (1 m. Its lightweight, portable construction adapts well to the role and can fit right into a person’s pocket or handbag. 99 Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (Black, 2 Pack) 4. 1K+ bought in past month. 99. $49. 00. Max Combo Set (Satin Nickel) Model # SET-EZA-23000. 25” for windows or patio doors due to the sliding glass door lock caps being shorter. A door jammer is a device that is used to stop people from entering or leaving a room through a locked door. 6 out of 5 stars 1,863. 5. Includes removable head for sliding door application. 0 out of 5 stars 783. This item: Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different Adjustments (Black) $32. 6 out of 5 stars 649. com. Find helpful customer reviews and review ratings for Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different adjustments (Teal w/Alarm) at Amazon. 5. 2. 99 $ 32. Remove pins to adjust length of door bar,osition padded foot distanced from door based on knob height: 27-31 in. (70 cm) to 44-1/2 in. Its design is similar to the Master Lock, with a pivoting foot and a plastic, Y -shaped yoke at the top, but it's a little more expensive. Ball Style Bed and Bath Door Knob; Satin Nickel. 99 $ 56 . 500+ bought in past month. If you’re looking to use one jammer to perform multiple functions, this 2-1 security bar by Guard Dog can be implemented. Add. It’s made of heavy-gauge steel and extends from 29 to 43 inches to fit under almost any standard doorknob. Manufactured with steel, it can withstand up to 300 pounds of weight. 99 $ 29. ) to 42 in. 99. 7 out of 5 stars 26 $39. Guard Dog Security Door Stopper, 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Bar – 40 Different Adjustments Black (5. 5 out of 5 stars 454 1 offer from $56. 5 out of 5 stars 1,398 Kwikset 980 Single Cylinder: This ultra-reliable lock is our recommendation for best deadbolt. 6 out of 5 stars 5,850 2 in. Out of stock. (1. May 27, 2022 at 7:10. If you see the mounting screws showing, remove them, disassemble the knob, and lock. 99 $ 32 . 500+ bought in past month. 99 (5)It is highly flexible and adjusts heights (25″-45″) to fit most doors. $49. com. Guard Dog Security Door Jammer 2-in-1 Adjustable Door Knob Jammer & Sliding Patio Door Security Bar – 40 Different adjustments (Black 2 Pack) $56. Or fastest delivery Tue, Aug 1 . – MikeT. 5 out of 5 stars 440 $32. Foot Distance from Door . 4 out of 5 stars 39 ratingsSecurityMan Adjustable Door Knob Alarm Jammer & Sliding Patio Door White Security Bar with 120Db Loud Alert Siren, Durable & Rugged Iron, Sturdy On Most Floors & Windows (Against Scratches) 7 4. Best selling items that customers love. 0 (20) 5. Browse door knobs now at acehardware. These tend to keep the door locked until you open the lock with a key. $19. AddDoor Jammer Door Stopper Door Security Devices Portable Door Lock Brace for Home Bedroom Hotel Bar and Personal Protection Device Lockdown. Door Security Bar Adjustable,19 to 52 Inch,3 in 1 Door Stoppers Barricade Security Bar onto Door Knob,Sliding Glass Door Lock Bar for Patio Door,Sliding Door,Window,Removable Security Jammer Bar 4. √ Highly flexible for any height of doors. FREE delivery Sat, Sep 23.