20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 1 Pack LUXX 200W BAR 208-277V The 4RS-1 must be installed

The 4RS-1 must be installed with a 120/240 volt power circuit (up to 50-amps @ 240vac)

They’re ideal for areas that experience high foot traffic such as entryways and/or doorways

The Root Spa is a deep water culture system

Ceramic metal halide 1000W lamps from Nanolux are the first of its kind which actually work

especially in high-pressure situations or during initial establishment

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 1 Pack LUXX 200W BAR 208-277V The 4RS-1 must be installedImportant 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,