The Flo-n-Gro Blue Bucket features food grade plastic, safe for you and your plants. At 4 gallons, it has plenty of space to grow your favorite plants. It’s unique space saving design makes it easy to fit into any room or system. Dimensions: 9.5 in wide x 9.5 in long x 13.5 in deep. Holds 3 gallons of media. Compatible with the Ebb & Flow 6 Site System and 12 Site Gro Systems only. Does not include 3/4 in grommet. Use with Tub Outlet Tee Fitting #747186 sold separately.