17_1/2x23_1/2x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack -power-&-lamp-cords dryness and ultraviolet radiation

dryness and ultraviolet radiation

so it does not have to be mixed with a "spreader-sticker" like the gallon size

Clear Vinyl Tubing - (ID) 3/16" - (OD) 1/4" - 1000 ft

Media Uses: May be used with all soilless media

every successful grow operation requires professional humidity control

17_1/2x23_1/2x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack -power-&-lamp-cords dryness and ultraviolet radiationNordic Pure Custom MERV 10 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