Integrated mounting angles and dual outlet and return ports for flexiblemounting options. An internal full size baffle between the outlet and returnports and long lasting black powder coated finish. 16″H X 16″W x 14″D = 3,532.80 C.I . / 231 = 15.51 gallons minus 2.5 gallons for inside baffle and gauge plate= 13 gallons minus 224 C.I. / 231= @ 12.03 gallons ( 1” deduction for expansion space at top of tank) 13 gallons if you filled all the way to the top. 16″ H X 16″ W x 14″D Usable Capacity: 11 Gal Oil level and temperature indicator Magnetic Drain Plug Approximate Weight is 55 Pounds Can ship UPS