To install, loosen the thumb screw and place the larger tubes over the patio doors and slide the narrower tubes inside each other and re tighten the thumb screw. This prevents the handles from turning and the door opening.
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Black Door Handle Door Handle Lock Square Channel Privacy Mask Interior Bedroom Room Bathroom Lock Home Lock
Aliexpress UK
Aobosi Induction Hob Single Induction Cooker Portable Ultra-thin RRP £41. Security burglar bar can also be easily adjusted and be used as sliding door lock. Material Iron. Mounting Type Door Mount, Under Door Mount.
eBay
Secret Door Lock Invisible Door Concealed Door Handle Safe Handles Interior Black Bedroom Locks Knob Hidden Hide Hardware Home
Aliexpress UK
Most thieves know they can easily break into you house via the weakest link that is usually the patio doors. Not only do our patio door locks add extra security to the door but also they are visible from the outside.
eBay
25mm-45mm Stainless Steel Door Lock Bathroom Round Ball Door Knob Set Handle Passage Lock Contemporary Internal Door Knob Pair
Aliexpress UK
Most thieves know they can easily break into you house via the weakest link that is usually the patio doors. Not only do our patio door locks add extra security to the door but also they are visible from the outside.
eBay
Single/Double Door Glass Lock Zinc Alloy Showcase Cabinet Door Cylinder Sliding Glass Push Door Locks for Furniture Hardware
Aliexpress UK
Features: Essential tools: The sliding door keyed lock can help the door close safely, you do not worry about the door being blown away by the wind and other situations and have a relaxing sleep from night to the morning.
eBay
Wooden Door Lock Hole Opener Kit Lock Mortiser Door Fitting Kit w/3pcs Cutters & Accessories Door Slotter Mortising JigTools
Aliexpress UK
Add safety, security, and a visual deterrent to your sliding patio door with Ideal Security's sliding patio door security bar. Breaking through the tempered glass of a patio door is very noisy and not easy, but forcing a door open can be a burglar's easiest option.
eBay
Yellow antique bronze key, entrance door handle with lock, outer door lock and key, bedroom retro door handle, zinc alloy
Aliexpress UK
Highly sensitive: 120db Loud Alert Siren. Dual-function: Prevents forced entry on a hinged, patio, and sliding doors. Fit most standard doors and sliding patio doors. Designed with 20-gauge steel to improve security on hinged and sliding doors the Guard Dog Door Keeper Alarm prevents forceful entry of even the largest intruders.
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KK&FING Zinc Alloy Left and Right Door Latch Door Buckle Push-pull Door Thickened Surface Mounted Door Bolt Lock Buckle Hardware
Aliexpress UK
Most thieves know they can easily break into you house via the weakest link that is usually the patio doors. Not only do our patio door locks add extra security to the door but also they are visible from the outside.
eBay
DRELD Antique Iron Door Lock Drawer Jewelry Wood Box Cabinet Wardrobe Cupboard Door Lock + Key Furniture Hardware Silver/Black
Aliexpress UK