20_1/2x25_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Lighting Expandable Greenhouse String Lights

Expandable Greenhouse String Lights

The variable speed refrigeration system keeps your dehumidifiers running during the challenging late flower stage where single-speed dehumidifiers require frequent defrost cycles

Spyder Series

Wicking mat for auto watering

Oidium lycopersicum

20_1/2x25_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Lighting Expandable Greenhouse String LightsNordic Pure Custom MERV 13 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition