MODEL NUMBERHPMAXIMUM VACUUMACFM Capacity @ 19” HgSCFM Capacity @ 19” HgHORIZONTAL RECEIVER GPVS-1104-P-120H228.4″ HgV 1616120 GAL GPVS-1144-P-120H328.4″ HgV 2121120 GAL GPVS-1102-P-120H428.4″ HgV 2929120 GAL GPVS-1142-P-120H528.4″ HgV 3838120 GAL