Ah, door knobs. Those often overlooked pieces of hardware we twist and turn every day without giving them much thought. That is, until we encounter the somewhat enigmatic and fiercely fancy double cylinder door knob. This isn’t just any door knob, folks. This is the James Bond of door knobs.
What in the World is a Double Cylinder Door Knob?
At first glance, you might think the double cylinder is the fraternal twin of a standard door knob. In reality, the double cylinder door knob is like that mysterious cousin who appears at family reunions and knows seven languages, practices obscure martial arts, and owns a collection of antique spyglasses.
In simpler terms, a double cylinder door knob has a keyhole on both sides, as opposed to the traditional door knob that has a keyhole on one side and a thumb turn lock on the other. It still utilizes the same size door knob hole as your other knobs.
Security or Lock in Situation?
The primary reason folks opt for the double cylinder? Security. Imagine you have a glass door or a door with a window. A classic thumb turn knob might be an invitation to thieves.
All they need to do is break the glass, reach in, and twist. But with our pal, the double cylinder, they’d have to be quite the contortionist to break in, reach through, and somehow turn the key!
However, the double-edged sword (or should I say, double keyed knob?) is that in case of emergencies, you’ll need a key to get out. It’s a trade-off. Beefed up security versus a potential hurdle during quick exits.
It’s kinda like wearing high heels to a dance party – you’ll look fabulous, but when “Footloose” comes on and you want to bust a move, those shoes might become a little… problematic.
Truthfully, these door knobs have a more pronounced use in commercial settings as you’ll see from my recommendations below but also have some really good residential uses like limiting swimming pool access.
Below are a few that I like best.
Two-way security: This key / keyless entry door knob features keypads and cylinders on both sides,with the keys being identical. Enabling multi functional control for secure access both in and out.
The backlit keypad makes it easy to operate day or night. For garden gates or fences door,and exterior or interior doors that require two way entry control.
Flexible settings: This electronic keypad door lock is highly customizable with options for automatic or manual locking. It can be set to automatically lock the door 2s to 12hr after closing the door or be set to not lock when there’s a lot of traffic.
Password synchronization: With the sync switch turned on,any changes made to the code on one side of the lock will be automatically updated on the other side as well
Durable and waterproof: This keypad code lock with handle is made of high quality zinc alloy and features an electroplated coating. Heavy duty with 2 solid lock cylinders.
Versatile: Fits all metal or wooden doors with thickness from 1-3/8″ to 2-3/4″.
Improved Security: This double cylinder door knob is keyed on both sides for a 200% improved security enhancement.
Versatile: Replaces most cylindrical ball entry door knob hardware. Fits most wood or metal door existing holes.
Break In Resistant: Industry leading protection with bump blocker and mushroom pick resistance. Simply put, it aint easy to pick.
Quality: Verified to withstand at least 120lbs of force & 200,000 cycles.
Peace of Mind: – It’s backed with a 25 year manufacturer hardware warranty and 5-year silver door knobs finish guarantee.
Convenient: This electronic door knob offers two ways to access. Passcode or key. 1 master code and 50 user codes. Access codes can be 4 – 15 digits in length. Ergonomic and trendy design to bring style to exterior and interior doors.
Smart: This keyless entry door knob lock also has a backlit keypad, so you can enter codes even in darkness. The visitor mode can be activated when a lot of guests are visiting. Enable silent mode if you don’t want to disturb. Has a low battery alarm. Use type-c USB backup in case that batteries run out.
Sturdy: This keypad door knob has a sturdy and heavy duty design with a solid lock cylinder and premium metal construction.
Simple Installation: This door handle set fits 1-3/8″ to 2-1/2″ thickness doors, with a 2-3/8″ or 2-3/4″ adjustable latch. Install it by yourself with just a screwdriver in minutes. Suitable for your bedroom , door entry or backdoor, etc.
DURABLE: Weather resistance. Quality materials and industrial design to ensure this lock will be reliable.
Beyond the security element, double cylinder door knobs can also make a style statement. Let’s face it, anything that’s a bit different or unexpected can become a conversation starter.
“Ooh, what’s this? A keyhole on both sides? How exotic!” said no one ever… until now? (Pinky finger firmly planted in the corner of mouth in my best Dr. Evil impersonation.)
Some local regulations and fire codes may not be the biggest fans of the double cylinder door knobs due to the potential escape challenges they pose in emergencies if used indoors. Always a good idea to check with the local authorities and not just Google or that one friend who claims to know everything.