This sale is for 12 replacement Ultrafine filters for the Respironics M-Series Cpap machine.
These filters are manufactured by one of the nation's leading manufacturers of home care supplies and are comparable to the original Respironics Ultrafine filter #1029331.

Each Ultrafine filter measures 1 3/4" x 1 1/4".

Please be sure to measure your filters in order to insure that you are purchasing the correct filters for your machine.

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