Clear Plastic Classic Thermostat Cover- Solid and Ring Bases- 5-1/4"-4-3/8" Color_R-8.0 Pink actual front end outer dimensions

actual front end outer dimensions are approximately 27 5/8" width X 18 5/8" height

+ Product Details Size - 22"w X 26"h is the size for the duct opening measurement only

+ Product Details Size - 12"w X 18"h is the size for the duct opening measurement only

ventilation

Actual Filter Size – 21 3/4"w x 23 3/4" x 1"

Clear Plastic Classic Thermostat Cover- Solid and Ring Bases- 5-1/4"-4-3/8" Color_R-8.0 Pink 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