20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filters 2 Pack steel plant stake Cost of Energy is 70-90%

Cost of Energy is 70-90% of life time cost

All duplex outlets have circuit breaker protection

a big cooling fins’ surface and a heat shield

Refrigerant - R410A

4800-5000K，650-665nm

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filters 2 Pack steel plant stake Cost of Energy is 70-90%Important 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,