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+ Product Details Size - The listed 5" diameter refers specifically to the size of the duct opening
+ Product Details Size – 25"w X 20"h is the size for the duct opening measurement only
ventilation
Example: If your hole is 20" wide by 14" tall
actual front end outer dimensions are approximately 7
18" x 22" Pleated MERV 8 Filter for HVAC Return Filter Grille Compatible With Duct 12in + 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
US$ 152.00
US$ 34.50
US$ 152.00
US$ 152.00
US$ 152.00