Ships within 48 hours · Estimated delivery Sep 10 - Sep 15
+ Product Details Size - 34"w X 36"h is the size for the duct opening measurement only
Simplified Installation: Our Butterfly Damper ensures easy setup
+ Product Details Size - 8"w X 6"h X 2"d (for duct opening measurement only)
+ Product Details Size - 18"w X 20"h is the size for the duct opening measurement only
+ Product Details Size - 36"w X 10"h X 2"d (for duct opening measurement only)
30" x 8" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 29.75 X 7.75] 3-Pack Adjustable Return + 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