26x30x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems You can choose to add

You can choose to add a manual dimmer which enables turning the power down to as low as 10% power for more control when needed

FMWH7230L is used for (4) 4' bulbs (one on the FLT44240

000W CMH lamp provides the absolute highest photosynthetically active radiation (PAR) to your specialty flowering plants

Use it alone in hydroponics or try blending it with coir or your favorite planting mix for superior aeration

Also includes a bonus built-in all-purpose knife sharpener

26x30x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems You can choose to addNordic 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