18" x 22" Pleated MERV 8 Filter for HVAC Return Filter Grille Insulated Line + Product Details Size –

+ Product Details Size – 12"w X 36"h is the size for the duct opening measurement only

Actual Filter Size – 13 3/4"w x 33 3/4" x 1"

Design – This airflow control component are made to connect to HVAC diffuser and restrict airflow

GPH for highest: - 1

18" x 22" Pleated MERV 8 Filter for HVAC Return Filter Grille Insulated Line + Product Details Size –18" x 22" Pleated MERV 8 Filter for HVAC Return Filter Grille Actual Dimensions: 17. 75" X 21. 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 Our