17_3/8x35x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Water Heaters Chillers All Xtrasun ballasts offer reliable

All Xtrasun ballasts offer reliable service you can count on for everything from fragile stems to your hardiest annuals

Dimensions: L 30''

Fill your nutrient tank with tap water of about 20 degrees

& TDS probe with exclusive PTFE non-clogging membrane

17_3/8x35x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Water Heaters Chillers All Xtrasun ballasts offer reliableNordic Pure Custom MERV 14 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