The Merv 16 Aprilaire 216 v 20x25x4 Air Filter is a high-quality pleated filter designed for air purifiers. With a MERV rating of 16, it provides efficient filtration for indoor air quality improvement. Made by the trusted brand Aprilaire, this filter has a life of 6 months and comes in a pack of 1. The filter is white in color and has dimensions of 20 inches in height, 25 inches in width, and 4 inches in length. It utilizes HEPA-Type filtration technology to effectively remove airborne particles and ensure clean air circulation in your living space.