29x35x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems Suggested Uses: Use in the

Suggested Uses: Use in the flowering stage of plant development to optimize flower production

since the heating element stays on ONLY for the time you set on the dial

release with pedal control

providing flexibility to the grower

29x35x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems Suggested Uses: Use in theNordic 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