Clear Plastic Thermostat Guard - See Thru - Solid Base - 8.25" x 5.37" - Extra Large - With Lock & Key 12" Diameter Seamless Installation: Designed to fit

Seamless Installation: Designed to fit seamlessly into a 24 by 24 inch opening

+ Product Details Size - 12"w X 6"h is the size for the duct opening measurement only

this air vent diffuser is built to last

the gap will expand and retract to meet perfect air supply needed

Clear Plastic Thermostat Guard - See Thru - Solid Base - 8.25" x 5.37" - Extra Large - With Lock & Key 12" Diameter Seamless Installation: Designed to fit+ Product Details Universal Fit Accommodates almost any thermostat with dimensions of 8 1 4" H x 5 3 8" W x 3 1 2" D. Durable Construction Made from high quality, high impact clear plastic for long lasting performance. Locking Security System Features a built in eight tumbler lock and a supplied key to prevent tampering and maintain consistent temperature settings. Easy Installation Comes with all necessary installation screws for a quick and hassle