22x23x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Ventilation/Air Conditioning Horti-Control teamed up with the

Horti-Control teamed up with the leader in foam filter design to create a filter for indoor gardeners

The Pro Reflector is a high performance reflector designed to deliver the brightest light at a budget price

Another negative effect of chemical pesticides is the fact that insects can possibly buildup a resistance to the chemicals in the pesticides

allowing more air volume than any other comparable impeller design

this formulation is ideal for growers looking for a general purpose medium which creates a well-balanced growing environment

22x23x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Ventilation/Air Conditioning Horti-Control teamed up with theNordic 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