Alorair Merv-1 4 Pack for Crawlspace Dehumidifier HD55S/HDi65S

MERV-1 for Crawl Space & Basement Dehumidifiers Sentinel HD55S/HDi65S.Dimensions: 17.3 x 8.8 x 0.4 in, 4 pack.This filter captures the majority of “larger" dust after the air blew into the machine.It can protect the inner component from the congestion of impurities from the air taking in from outside.Also at the same time ensure the maximum airflow supply volume.