Thermostat Lock Box Square – 5 x 5 Thermostat Cover With Lock, No Screws Thermostat LockBox with Key, Clear AC Thermostat Box Cover, Small Acrylic Lock Box For Thermostat on Wall (5x5x2)
Price: $18.99 - $14.99
(as of Jan 09, 2026 10:32:11 UTC – Details)
Product description
Almost Square in Shape Thermostat Cover Box with Lock 
The thermostat lock box is designed to accommodate thermostats measuring 5″W x 5″H x 2″D or smaller, including the most of round or square Google Nest Thermostat, Amazon Smart Thermostat, Honeywell Thermostat, ecobee New Smart Thermostat
Usable Square Inside, Hard and Keylock Design Rectangle Outside 
Internal Space (usable area): 5″H x 5″ W x 2″ D – Fits thermostats up to 5x5x2 inches (square-shaped).External Size (overall dimensions): 5.82″H x 6.61″ W x 2.4″ D – Rectangle shape due to reinforced acrylic thickness and keyhole design.
Upgraded Materials, Upgraded keys 
Harder And More Transparent Acrylic
This thermostat protection box is made of ultra-transparent acrylic material, which does not affect the beauty of your room at all. The case panel is thicker and less likely to break
Universal Key For Easier Management
Each thermostat lockbox comes with 2 keys, and the keys for these thermostat lockboxes are interchangeable. If you have multiple of these lockboxes, you only need to use 1 key to open all the lockboxes. This feature is especially convenient for those who have numerous rooms or office spaces
Easier to Open, Simpler to Install 
Beautiful and Practical Design
The thermostat lock box with key is ventilation on all sides, it is very beautiful and practical. This design can effectively avoid interfering with the detection of the current temperature in the room and keep the room temperature stable
No Punch Installation Optional
Two Installation Methods: [1. Drilling for Installation] and [2. Stick Directly to Smooth Tile Surface by Nano Glue].
The back of this square thermostat lock box is hollow, without a panel, so it can be directly placed over the thermostat (no need to remove the thermostat).
Effectively Prevent Tampering and Save Electricity Costs 
This thermostat lock box with key prevents unauthorized adjustments, tampering, and damage to thermostat settings by children, tenants, or the public. It can reduce your energy costs and save your family/office/store/production workshop a ton of money
1 Thermostat Lockbox Home
2 Thermostat Lockbox Home
3 Thermostat Box Factory
4 Thermostat Lockbox Store
5 Thermostat Lock Kitchen
Is this product square?
The usable space for this product is 5Hx5Wx2D inches (close to a square), but because space is needed for the shell and keys, the overall shape is more rectangle.
Is this thermostat cover difficult to install? How can I install it if I don’t have a drill?
We offer 2 installation methods: 1) Use super-sticky nano glue to attach the thermostat box directly to the wall, or 2) Install by drilling. These options are ideal for renters, those avoiding wall damage, or anyone without power tools.
What is the matertial? Is it Plastic?
No, This ac thermostat locxbox is made of Acrylic！Acrylic is thicker, clearer, stronger, more durable, more resistant to scratches and scuffs, and better UV Resistance than regular plastic.
How do I know if this cover box will fit my thermostat?
Your thermostat size should be within 5x5x2 inches(WidthxHeightxDepth/Thickness). The most round/square thermostats on the market are suitable (including Google Nest thermostat, Amazon Smart thermostat, ecobee thermostat, Honeywell thermostat).
What does a universal key mean?
The keys for this square thermostat lock box are interchangeable. For example, if you purchase 10 lock boxes, you will receive 10 boxes and 20 keys (2 keys per box). But one of the keys can open all the 10 boxes. （Keys fit only this lock box model.）
Square Thermostat Cover 5 Inch: This thermostat lock box especially suitable for small round and square ac thermostats size within 5”Wx5”Hx2”D or smaller, such as google nest thermostat, google nest learning thermostat, amazon smart thermostat, ecobee thermostat, honeywell square thermostat. ~ Please double check your ac thermostats dimensions before purchasing~
Thermostat Guard with Key: One thermostat security cover is equipped with 2 keys, which can effectively prevent your thermostat data from being tampered by children/visitors or employees/colleagues, saving your electricity bill and maintaining your living comfort
Better Acrylic Material: Our acrylic thermostat lock boxes has no color, is more transparent and stronger, showing the quality of your life than ordinary plastic boxes. It will not change color and yellow, long-term use can also keep the interior clearly visible
No-Screw Installation: Our locking thermostat cover with key on set provides two installation methods, A-Stick directly on the clean and smooth wall with nano glue, B- Drill holes for installation. And you don’t need removing the thermostat from the wall
Easily Lock Multiple Thermostat Protective Cover: The keys for this thermostat lockbox are universal. Each lockbox comes with 2 keys. If you purchase 10 lockboxes, you only need 1 key to open all 10 boxes on this model, without the need to match specific keys to each lockbox. Perfect for multiple rooms and bulk purchase
Internal Space (usable area): 5″H x 5″ W x 2″ D – Fits thermostats up to 5x5x2 inches (square-shaped)
External Size (overall dimensions): 5.82″H x 6.61″ W x 2.4″ D – Rectangle shape due to reinforced acrylic thickness and keyhole design.
