Designed To Meet Or Exceed Oem Performance Standards But At A Significantly Lower Price * This Filter Is Designed Comparably To The Oem Filter And Delivers The Same Or Better Purity * For Use With The Invacare Mobilaire (all Models) And Platinum Concentrators * Priced Up To 35% Lower Than Comparable Oem Filter (invacare# 1131249) * Construction Of Body: 100% Styrene Butadien Copolymer * Construction Of Filter: Synthetic Glass Non-woven Filter Media * Port Size: 22 Mm Outlet With 3/8-18 Internal Threads * Clear With Smoke Tint In Color * Meets Or Exceeds All Oem Specifications Including Purity Standards And Back Pressure Performance Testing * Bacteria Efficiency Test: 99.9720% * Virus Efficiency Test: 99.99% *