Description Feature: Prolongs the life of your machine New and improved clear housing makes identifying a dirty filter simple. Guaranteed to fit Thank you for looking Replacement parts, no prescription needed For use with the Invacare Mobilaire (all models) and Platinum concentrators 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% Function: sterilization Color:As the picture Size:13cm x 6cm x 4cm(5.12 x 2.36 x 1.57) Package incldue : 1 HEPA filter Note: 1. Manual measurement tolerance is 2-5g/cm. Please dont mind your proposal. 2. Due to differences in display methods, the image may not reflect the actual color of the item. thank you very much!