CPAP Supplies Filters
CPAP Supplies Plus/Direct
CPAP Supplies Filters are identical to ResMed #21935 and are compatible with S6 series CPAP machines. These filters coming in 3 packs and are manufactured by CPAP Supplies Plus/Direct. You can buy these filters at just $5.25. The company offers free shipping on orders over $99.
For more information on these filters, you can visit: http://www.cpapplus.com/supplies-filters-for-s6-series-cpap-machines-3pack