Ultra compact in size, quiet and reliable - Max 1/13 HP chillers are great for Nano Reef tanks in need of proper cooling this summer! Ideal for nano tanks up to 40 gallons. 13" front to back x 8.5" wide x 16" tall with fittings on. Protect your livestock. Invest in a chiller this summer. Wholesale only - sold through your local fish store on via online aquarium vendors.