16x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 4 Pack Environmental Controllers This lamp is an excellent

This lamp is an excellent choice to maximize the performance of any 315W CMH grow light system

no guesswork

Replaces a 400 watt HPS light with 40% less power

including tomatoes & other highly resinous crops

No fillers

16x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 4 Pack Environmental Controllers This lamp is an excellentImportant 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,