AlorAir 3-Pack Merv-1 Filter for Whole House Dehumidifier Sentinel HDi100, HDi120

3-Pack MERV-1 filter for whole-house dehumidifier Sentinel HDi100, Sentinel HDi120. Filter Dimension: 13.8×14×0.3 in, compatible with Sentinel HDi100, HDi120 Dehumidifier. Prevent particles in the air from entering the inside of the unit. Regular replacement of filters can make the compressor run more efficiently. MERV-1 filter: Replace as necessary-we recommend changing every 2-3 months.