26" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 18" Diameter this diffuser is the perfect

this diffuser is the perfect blend of function and style for your home

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

Install it with ease on your ceilings to transform your space

actual front end outer dimensions are approximately 27 5/8" width X 22 5/8" height

+ Product Details Size - 14"w X 14"h is the size for the duct opening measurement only

26" x 30" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 18" Diameter this diffuser is the perfect+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 30" OR 30" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 75" x 29. 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