This filter is made specifically for replacement on the Dri-Eaz 1200 DrizAir portable dehumidifier and the LGR 7000 Dehumidifier. When inspecting your filter for replacement, look for accumulated dust and debris that would restrict airflow through the filter into the unit. If any is visible, vacuum out the debris. Replace the filter after vacuuming it 3 times, or immediately following a mold remediation job. Do not wash filter!