30" x 8" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 29.75 X 7.75] 3-Pack 18in diameter + Product Details Size -

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

Included in the package are a leveler

with actual outer dimensions of 38

providing a stylish and practical solution for ventilation

+ Product Details Size - The listed 5" diameter refers specifically to the size of the duct opening

30" x 8" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 29.75 X 7.75] 3-Pack 18in diameter + Product Details Size -30" x 8" Pleated MERV 8 Filter for HVAC Return Filter Grille 3 Pack Actual Dimensions: 29. 75" X 7. 75" A Uniquie Combination of Cotton & Synthetic Fibers Gives You The Most Filtration And The Least Air Resistance Equals Great Air & Easy Airflow For Your System The "W" Shaped Pleats Give You More Filter Surface Thereby Capturing More Dust All Our Filter Are Tested Per ASHRAE 52. 2 Standards MERV 8 And An Average Arrestance Of 90 94% Extra Strong Frame