Perfect-A-Lite Full Hood, 30" Oak 30" x 12" x 3" high. Fits 20 long and 29 gallon tanks. Fixture has a 90 day warranty against defects in materials and workmanship. This hood has an aluminum radiator that allows ballast to operate cooler andincreases life of the unit. The replaceable plastic backstrip can be easilycut to accommodate heaters and filters. The safe-glass shield protectselectrical parts from moisture and prevents corrosion. Comes with one 24" (T-8) 1" diameter lamp.