12" x 32" or 32" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10in diameter this thermostat guard is the

this thermostat guard is the perfect solution for safeguarding your temperature controls

+ Product Details Size – 10" x 18" or 18" x 10" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16

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

75"H – fits a 10" x 8" duct opening

12" x 32" or 32" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10in diameter this thermostat guard is the+ Product Details Perfect Fit & Easy Sizing Designed for a 12" x 32" or 32" x 12" duct opening (measured at the opening), with actual outer dimensions of 14. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 11. 75" x 31. 75" x 1" Premium Airflow Efficiency High performance cube core eggcrate design allows 95% airflow efficiency, reducing energy costs and maximizing HVAC system lifespan. Durable, Rust Free Aluminum