Designed to meet air filtration efficiency criteria required to gain points toward certification in the Leadership in Energy and Environmental Design (LEED) Green Building rating system. Slim format allows upgrades from medium-efficiency pleated filtration without investing in new equipment. Low resistance to air flow helps reduce energy costs. Keeps coils, diffusers, and ductwork cleaner while removing pollens and allergens from the occupied space. Industrial grade frame and 100% synthetic media assures filter performance during the life cycle. Wire-backed design.