20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 12 Pleated Plus Carbon 1 Pack nutrients-and-supplements The HI7634-00 is a two-pole

The HI7634-00 is a two-pole amperometric EC/TDS probe for panel mounted mini controllers that measure in the low range (μS/cm and ppm)

• Activates a number of plant growth regulating enzymes

We offer a one year comprehensive warranty on parts and labor

increases color expression

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 12 Pleated Plus Carbon 1 Pack nutrients-and-supplements The HI7634-00 is a two-poleImportant 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,