20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack Water Pumps & Irrigation Supplies when you set up a

when you set up a tray of rockwool or oasis cubes water with Hum-tea

enabling it to work for a wide range of rack mount applications

To be completed before system is setup

1x RJ12 Splitter Hub

Stealth-RO150/300 RO Membrane reduces 89%+ of PPM of total dissolved solids

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack Water Pumps & Irrigation Supplies when you set up aImportant 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,