The GoodKnight 420/ 425 Pollen Foam Filters are used with the GoodKnight models that were manufactured by Puritan Bennett.
The filters can be used with the following models:
The filters are recommended to be replaced every 3 months, but to be cleaned every month! When using with a ultra fine filter, place the ultra fine filter in first and then the foam filter.
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I live on Vancouver Island. I called first and discussed what I was looking for in a machine. The person I talked with provided me with a price that was over $1000 less than my local dealer. I was asked to submit my prescription by email. After it was approved and within 2 hours I was provided with a link to order. After ordering I received a confirmation and follow up email when the machine was ready to send. The pressure and ramp was preset and a few extra filters thrown in. Altogether in less than a 24 hours my order was made, processed and the CPAP machine sent to me. Five days later my CPAP arrived. Great communication. Very quick, friendly and efficient service. Will definitely recommend and have them assist me with future purchases.
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Jim Troy Georgetown, On