Specifications: Model: WP-30 Outlet Size (mm):80 Inlet Size (mm):80 Speed (rpm):3600 Displacement (m3/h):55 Lift (m):29 Suction (m):7 Engine Model:168F-2 Max Output (KW)/HP:6.5 Compression Ratio:7.5:1 Engine form: Single Cylinder Air Cooling,4-Strokie Air Cleaner form: Semi-dry;Oil bath;Dual;SSilent;Cyclone Ignition form: CDI Starting form : Recoil Package Dimensions (mm):530*450*450 N. W/G. W (kg):15/16 Specifications: Model: WP-20 Outlet Size (mm):50 Inlet Size (mm):50 Speed (rpm):3600 Displacement (m3/h):33 Lift (m):29 Suction (m):7 Engine Model:168F-2 Max Output (KW)/HP:5.5 Compression Ratio:7.5:1 Engine form: Single Cylinder Air Cooling,4-Strokie Air Cleaner form: Semi-dry;Oil bath;Dual;SSilent;Cyclone Ignition form: CDI Starting form: Recoil Package Dimensions (mm):345*330*375 N. W/G. W (kg):18/19