16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 1 Pack Garden Hygiene and Safety Resists EMI/EFI from electronic ballasts

Resists EMI/EFI from electronic ballasts

Nutrient lockout can be caused by several factors in water quality

AI21040 - GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo Pen

The unique design along with its high mounting position allows this LED to perform side by side with its HID counterparts

This dual-channel controller allows daisy chaining up to 100 fixtures per zone

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 1 Pack Garden Hygiene and Safety Resists EMI/EFI from electronic ballastsImportant 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,