Better filtration is the first step in improving Indoor Air Quality. Pleated Panel Filters outperform ordinary furnace filters with higher efficiency and lower pressure drop allowing air-handling systems to stay cleaner and operate more efficiently. Our EQP (standard capacity) and DQP (high capacity) pleated filters are offered in ASHRAE 52.1 and 52.2 (MERV) ratings and are built to withstand rigorous conditions.