25" x 25" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 24.75 X 24.75] 3-Pack w8h8 + Product Details Size &

+ Product Details Size & Compatibilty - The 18" to 14" round metal pipe reducer & increaser 30 gauge is compatible with duct 18" to 14"

+ Product Details Size - 24"w X 14"h is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 27 3/4" x 1"

including inclement weather

round-connects to vent register diffuser

25" x 25" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 24.75 X 24.75] 3-Pack w8h8 + Product Details Size &25" x 25" Pleated MERV 8 Filter for HVAC Return Filter Grille 3 Pack Actual Dimensions: 24. 75" X 24. 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