20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 14 Plus Carbon 4 Pack Nutrients Maxpar lamps should be considered

Maxpar lamps should be considered a valuable component to any lighting setup

Completely Sealed Against the Elements

Two opening roof tops can slide out or lift up to prevent overheating

These filters also feature superior two-stage air filtration design: air is filtered once as it enters the filter

This continuous output light source outputs a continuous spectrum of light that closely mimics the visible spectral output of the sun

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 14 Plus Carbon 4 Pack Nutrients Maxpar lamps should be consideredImportant 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,