28x30x1 MERV 7 AC Furnace Filters 6 Pack lighting-&-electrical-components Contains two dual-ball bearing fans

Contains two dual-ball bearing fans with PWM-controlled motors to minimize noise

Sluggo works just as well and I don't have to worry about him getting into the granules

Technaflora's kelp is harvested by hand and in accordance with all government regulations

It is compatible with all injectors and fertigation systems

28x30x1 MERV 7 AC Furnace Filters 6 Pack lighting-&-electrical-components Contains two dual-ball bearing fansNordic Pure MERV 7 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters