21x21x1 MERV 8 AC Furnace Filters 6 Pack LUXX Bar The Hydrofarm Electronic Water Timer

The Hydrofarm Electronic Water Timer makes watering your plants a breeze

Outside diameter 13

Polyglyceryl Oleate 2

and ease of use

You’ve worked hard on your garden

21x21x1 MERV 8 AC Furnace Filters 6 Pack LUXX Bar The Hydrofarm Electronic Water TimerNordic Pure MERV 8 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 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters