The 887 PRO Vacuum Pumps Challenger is a high-performance vacuum pump and requires compatible, high-quality components as manufactured by our innovative minds here at National Vacuum Equipment. We also manufacture and distribute all the required components needed for this and every other pump we sell. Got a specific operational requirement? No problem! We work closely with every client to customize the system to. 887 PRO MUFFLER PACKAGE Vacuum pump included; specify muffler location High-efficiency intake exhaust silencer 14” round oil catch muffler 1” Drain Valve All of the elbows, fittings, and high temperature hoses are factory connected L 45 3/16” W 38 11/16” H 26 1/2” SPECIFICATIONS 887 PRO VACUUM PUMP Maximum Airflow 532 CFM *Full vacuum 28 “ Hg *Operating Range - RPM 1100 - 1200 Hp required @ Full Vacuum 30 - 33 Hp required @ 10 psi 27 - 31 Hp required @ 15 psi 27 - 36 Hp required @ 20 psi 33 - 42 Hp required @ 25 psi 38 - 48 Hp required @ 30 psi 50 - 54 Porting size 4” Shaft size (3/8” key) 1 3/4” Pump dimension L 30 7/16” W 21 7/8” H 27 3/8” Approximate weight 620 lbs