16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 15 Plus Carbon 1 Pack Hydroponics Big Time Roots is non-toxic

Big Time Roots is non-toxic and safe for all plant

This Sling Harvesting bag is equipped to handle the job with a mil-spec sewn heavy-duty strap that is adjustable to fit multiple heights

For heavy infestations repeat applications may be required with 2-3 day intervals

The SAM 400® will not impact air flow

It is not a relay or timer that controls photoperiod

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 15 Plus Carbon 1 Pack Hydroponics Big Time Roots is non-toxicImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,