232729, 47:1 Left Hand Supply Unit, With Carbon Steel Pump; 232839, 47:1 Left Hand Supply Unit, With Stainless Steel And Ceramic Pump; 232730, 47:1 Right Hand Supply Unit, With Carbon Steel Pump (Shown); 232840, 47:1 Right Hand Supply Unit, With Stainless Steel And Ceramic Pump - Graco Uni-Drum Instructions Manual