Guide Rail System Material Cast Iron For Use With 12T645 to 12T652 Overall Height 36 in Overall Width 22 in Requires (2) 2 in Guide Rails SS Recommended. Lifting Chains and Bails Ordered Separately Includes Base Adapter Bolts Fittings and Upper Guide Rail Positioning Bracket Pump Discharge 2-1/2 in Flange Rail System Discharge 3 in Flange