16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 4 Pack Growing Media 1 x Full Spectrum Quantum

1 x Full Spectrum Quantum Sensor

There are four precision thermal probes included

At 1050 actual watts and 1602 μMol/s total photon flux

Lightweight and compact

Big Time Rinse is used at the end of a crop's growth cycle to trigger the last reproductive stage of the plant

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 4 Pack Growing Media 1 x Full Spectrum QuantumImportant 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,