12 x 24 Merv 2 HVAC Pleated Filter, 12-Pack Color_Brown Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 10" duct openings

Actual Filter Size – 29 3/4"w x 13 3/4" x 1"

+ Product Details Size - 14"w X 14"h Is The Size For The Duct Opening Only

meticulously designed for optimal HVAC performance

+ Product Details Size & Compatibility – The size of galvanized sheet metal oval stack head with collar is 10" X 6" - 7" and it is compatible with Duct 7"

12 x 24 Merv 2 HVAC Pleated Filter, 12-Pack Color_Brown Ideal for Walls & Ceilings:The 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