22x29x1 MERV 13 AC Furnace Filters 6 Pack Hydroponics The #4 is the largest

The #4 is the largest perlite on the market and averages a whopping size of around 1 in

Includes raised platform insert and capillary matting allowing plants to self water for up to 14 days (subject to climate conditions)

(*compared to Plant

The adult wasps live anywhere from 7 to 14 days

Specification : SF-4000 new version

22x29x1 MERV 13 AC Furnace Filters 6 Pack Hydroponics The #4 is the largestNordic Pure MERV 13 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, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200