AG Industries AG1029331M Ultra Fine Filter for CPAP. (2-Pack) M-Series
New in package. Ultra Fine filter for various CPAP machines. Check to make sure this is the compatible with your machine. Model: AG1029331M Specifier UltagenTM Filters HCPCS A7038 OEM Respironics Machine/System M-Series (C-Flex & Non C-Flex) Size 1 3/4" x 7/8" Sold as 2/Pk.