Coverage Maximum Spread - 24" x 24" Recommended Spread - 18" x 18"- We suggest no more than 12" x 12" with a single light Multiple modules can be daisy-chained together with unit link cables for larger tanks. SpecificationSpectrum Range - 6,000K - 9,000K Dimensions - 1" Thick x 4.9" Outside Diameter Power Consumption - 15W Power Supply - 100-240V AC (input) 24v DC (output) Mounting Mounting the A80 can be accomplished with the included Canopy Mounting Adapter or the Mini A-Series Gooseneck which can be purchased separately. What's Included? 1x A80 Tuna Sun 1x DC Power Supply 1x Canopy Mounting Adapter