34" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w36h36 Two Mounting Base Options –

Two Mounting Base Options – Includes both a solid base and a ring base

Actual Filter Size – 13 3/4"w x 21 3/4" x 1"

actual front end outer dimensions are 7

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 36" OR 36" x 28" duct opening (measured at the opening)

this guard fits almost any thermostat and blends seamlessly into any setting

34" x 14" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w36h36 Two Mounting Base Options –+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 14" Or 14" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 16. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 13. 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