The largest unit is the AeroFlo2 60 combined with an Extension. The AeroFlo2 60 Extension doubles the grow sites to 120 and the reservoir capacity to 80 gallons. Configure the grow chambers all on the same side or to stagger them to accommodate larger plants. This extension includes: 40 gallon Panda reservoir Six 6 ft. grow chambers Reservoir coupler Injection manifold Support structure 3 inch Grow Cups CocoTek Liners Clay Pebbles 3-part Flora Kit Assembly Guide *Dimensions: • Standard configuration: 6'10" L x 9'7" W x 2' H • Staggered configuration: 11'7" L x 9'7" W x 2' H.