Aluminum separator hepa and ulpa grade cleanroom air filters with efficiencies up to 99.9999+% and pressure drops as low as 0.3" w.g. ASHRAE filters with efficiencies from 60% to 95%. Minipleat hepa & ulpa cleanroom filters with efficiencies up to 99.99999+% and pressure drops as low as 0.12" w.g. With HEPA Corporation's engineering capabilities, our 5" deep separatorless filter pack translates into lower pressure drops, as much as 50% energy savings and extended life. For lower resistance, longer life and greater energy savings, our 7.5" deep minipleat offers efficiencies up to 99.99999+% and a pressure drop of 0.22" w.g. @ 100 FPM. For lowest resistance and longest life, our 10.75" minipleat provides the highest capacity performance with energy savings in a broad range of efficiencies. Gel or knife edge seal options for any filter as an alternative to gasketing.