Bottom coupler 1.5″ off the bottom, used for ball valve. Top coupler 6″ off the bottom, used for thermometer. Graduated volume markers from 1 to 14 gallons. Lid inlcuded. Wall and bottom thickness: 1.0mm. Valve and thermometer not included.This is not a “regulary” stocked item – allow 3-5 days to ship or arrive at store.