12 x 6 Merv 2 HVAC Pleated Filter, 12-Pack return grille + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 28" OR 28" x 22" duct opening (measured at the opening)

Applications – Suitable for cutting (thick & thin) PVC tubing diameter below 45mm - Uses ratcheting design for effortless cutting

+ Product Details Size - 18"w X 20"h is the size for the duct opening measurement only

+ Product Description Introducing the 6" Butterfly Damper – Your Solution for Controlled Airflow

12 x 6 Merv 2 HVAC Pleated Filter, 12-Pack return grille + Product Details Perfect FitThe W shaped pleats enlarge the surface area for capturing dirt and particles for cleaner air Get 3 MERV 2 AC filters per pack while only paying for 2 Dimensions are interchangeable for rectangular filters, but not square ones Let air circulate and cycle through your HVAC without obstructions