The Carrier 88NA2506MB01 (around 1.5 lbs) is a replacement air filter specifically designed for whole-house HVAC systems with compatible air filtration units (verification needed for specific models). This 20x25x2.2 " MERV 10 filter traps dust, allergens, and other airborne particles as air circulates through your system, promoting cleaner indoor air quality. https://www.partshnc.com/filter-media-2000cfm-2https://www.partshnc.com/filter-media-2000cfm-2