Clear Plastic Designer Thermostat Cover- Solid and Ring Bases - 7-1/16" W x 4-1/8" H x2 1/8"D w10h10 + Product Details Size –

+ Product Details Size – 20"w X 26"h is the size for the duct opening measurement only

+ Product Details Size - 25"w X 12"h is the size for the duct opening measurement only

Suitable for medium-pressure applications

Actual Filter Size – 29 3/4"w x 35 3/4" x 1"

Clear Plastic Designer Thermostat Cover- Solid and Ring Bases - 7-1/16" W x 4-1/8" H x2 1/8"D w10h10 + Product Details Size –+ 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