Due to disruptions in our supply chain with COVID-19, we are temporarily out of stock on our MA-40 Filters. We have a new shipment on the way and will have plenty to fulfill all orders. Your existing filters will continue to perform within your units until the new ones arrive.
We are very sorry for this inconvenience and appreciate your patience.
Replacement filter set includes Pre-Filter, HEPA H13 Filter, and Activated Carbon Filter. All filters should be replaced after 3,000 hours of use.