These are hypo-allergenic replacement filters for the ResMed Airsense 11 series of machines. We do not recommend washing these filters and they should be replaced every 3-6 months.
Respironics Bacteria Filter for CPAP Machines ( 1 Pack)
$12.00
AirSense™ 11 Power Supply - 65W
$89.00
ResMed Airsense 11 Hypo-Allergenic Filters (5 Pack)
$32.00