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Allegro 9520-03M 8" Heavy Duty Explosion-Proof (EX) Blower System w/ 8" MVP (9503 Blower)

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Our Complete Ventilation Systems include all the most requested equipment you need for your confined space site. The systems include your choice of our most popular Centrifugal Blowers, 6′ & 15′ of ducting with a storage bag and a Manhole Ventilation Passthru (MVP). The Centrifugal Blower Systems offer lightweight portability with the highest output available. 

Smart compact design allows for easy use and storage without sacrificing airflow. Two 8” (20.3 cm) ports offer positive ventilation or fume extraction. A powerful 5 HP Briggs & Stratton engine is perfect for locations where electricity is unavailable.


  • 8” (20.3 cm) flange on intake and exhaust side
  • Tough “safety orange” polyethylene construction
  • One piece housing with integrated handle
  • Black powder coated 12 gauge steel base
  • 8-blade cast aluminum fan impeller
  • 6’ (1.82 m) inlet duct extension
  • Steel black powder coated grills
  • Equipped with five rubber feet


  • 5 HP, gasoline powered (170cc)
  • Four stroke cycle
  • Air cooled
  • 3.2 quart (3.03 liters) fuel tank
  • Pull start
  • Also available with a Honda 3.5 hp engine (P/N: 9505-50)


  • Aluminum, eight blades


  • Yellow, single-ply lightweight vinyl/polyester, PVC coated
  • 180°F (82.2°C) temperature resistant
  • Retractable, non-collapsible design
  • Hard drawn spring steel wire helix, ASTM 227 Specs


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