20x20x5 (4 3/8) Honeywell/Lennox Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack Commercial Lighting Due to the very small

Due to the very small size of the chlorine dioxide molecule

4 RAW Yucca - 2 oz

or a lighting controller

Basic Enclosed Reflector with 200W CFL 6500K Bulb Package

This 1U rack cooling system features programmable fan speed control

20x20x5 (4 3/8) Honeywell/Lennox Replacement Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 4 Pack Commercial Lighting Due to the very smallImportant 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,