GREAT VALUE: This is a replacement carbon filter for air purifiers, to help effectively filter airborne particles for healthier living. Approximate dimensions are:49.21' x 10.04' x 0.31' inches COMPATIBILITY: Compatible with Honeywell Furnace HVAC Systems Air Purifier Filters. Please note that this is not an OEM product. This is a replacement product by LifeSupplyUSA, exclusively for sale by LifeSupplyUSA. CARBON POWER: Carbon prolongs the life of the HEPA filter and capture the largest particles that irritate your airways, such as hair, lint and dust. It is also an odor remover, cleansing your air of cooking odors and smoke. USED BY PROFESSIONALS: LifeSupplyUSA Humidifiers Filters are made to be durable & efficient for months. SAVE MONEY by ensuring the maximum airflow supply volume & protecting your device.