Clear Plastic Regal Thermostat Cover - Ring & Solid Bases - 6-3/8" x 3-1/2" Fixed Blades with Damper actual front end outer dimensions

actual front end outer dimensions are approximately 24 5/8" width X 22 5/8" height

Its locking eight-tumbler mechanism and supplied key safeguard your thermostat from tampering

Can be hooked up with our Butterfly Dampersfor precise airflow control

+ Product Details Size - 12"w X 24"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 36 5/8" height

Clear Plastic Regal Thermostat Cover - Ring & Solid Bases - 6-3/8" x 3-1/2" Fixed Blades with Damper actual front end outer dimensions+ Product Details Durable Construction Made with clear, high impact plastic to provide reliable and long lasting protection for your thermostat. Two Mounting Base Options Includes both a solid base and a ring base. The ring base allows installation without removing the thermostat, offering maximum flexibility. Locking Security System Features a built in eight tumbler lock and a supplied key to prevent tampering and maintain consistent temperature