20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 2 Pack light-movers-hangers The dimmer knob allows growers

The dimmer knob allows growers to change the brightness level of both the veg and bloom lights from 0-100% allowing you to obtain perfect growth performance

We are proud to bring you the first FloraFlex® Nutrient line: an easy to use two part powder formula for both the Vegetative and Bloom stages

Ballasts include welded-on brackets for easy replacement mounting

• View data and current status remotely via Google Docs (a computer with permanent internet access is required)

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 2 Pack light-movers-hangers The dimmer knob allows growersImportant 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,