Honda Engine13.5 HP20 HP20 HP20 HP20 HP24 HP Hose Outlet Size3"3"3"3-1/2"3-1/2"4" Roots Positive Displacement Blower33 URAI36 URAI36 URAI36 URAI36 URAI47 URAI Feeder Size12"12"12"16"16"20" Hopper Size32 cu ft32 cu ft38 cu ft38 cu ft44 cu ft44 cu ft Overall Size56" x 48" x 63"H56" x 48" x 63"H68" x 49 x 63"H68" x 49" x 63"H80" x 49 x 63"H80" x 49" x 63"H WeightApprox. 1000 lbsApprox. 1000 lbsApprox. 1600 lbsApprox. 1600 lbsApprox. 1800 lbsApprox. 1800 lbs