30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w20h20 + Product Details Perfect Fit Height_14in WD G128 hp jblade overlay

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 34" OR 34" x 36" duct opening (measured at the opening)

Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 10" duct openings

+ Product Description The Clear Plastic Thermostat Guard provides reliable protection and security for your thermostat while ensuring optimal functionality

Actual Filter Size – 27 3/4"w x 21 3/4" x 1"

Full Control – Full 190 degrees control of air direction vertically & horizontally

30" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w20h20 + Product Details Perfect Fit Height_14in WD G128 hp jblade overlay + Product Details Perfect Fit & Easy Sizing Designed for a 36" x 34" OR 34" x 36" duct opening (measured at the opening) Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 10" duct openings