3M HE Filter TR-3712N, for Versaflo TR-300 Series PAPRGeneral Information Brand Versaflo Hazard Type Silica Mounting Type Belt mounted Product Series TR Series Product Type Filter Protection Type Particulate Cartridge Or Filter Type Particulate Gas & Vapor Protection Type Particulate Gas Vapor Protection Type Particulate Country Of Origin Canada Sold As Case California Residents Proposition 65 Warning Return Policy NCNR Non Cancellable Non Returnable Dimensions and Specifications Width 13 in 33. 02 cm