20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack Water Pumps & Irrigation Supplies Nordic Pure 12x12x1 MERV 7

Nordic Pure 12x12x1 MERV 7 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

Features: Control:  Front mount only

(1) Boost (1) Prime Zyme

The COM-100 is a professional level EC/TDS meter at an unbeatable price

When water starts to flow

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack Water Pumps & Irrigation Supplies Nordic Pure 12x12x1 MERV 7Important 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,