5x 6500K CREE LED's mounted in aluminum hood. About 22" wide. Ran it for about 2months in an 11 gallon aquarium. Measured PAR at 40-50 umol at substrate 15" below light. Perfect with co2 in nano tank. Mounts via two clamps directly to rear aquarium panel. $80 shipped CONUSView attachment 2345View attachment 2346