Big Fans [HVLS] / MonsterFans GD Series


MonsterFans GD Series

Geared-Drive HVLS Fan

The GD Series fan offers diameters ranging from 8ft – 24 ft [2.4m – 7.3m] and delivers maximum speeds of
53-105 RPM. Built with a Helical Inline Reducer motor providing whisper-quiet operation for sensitive applications, and a cool 6 MPH breeze for areas up to 230 ft.


  • Warehouses
  • Manufacturing
  • Distribution centers
  • Vehicle maintenance
  • Airplane hangars
  • Industrial applications


Our MonsterFans provide monster comfort by moving monster amounts of air volumes at a slow non-disruptive speed. See how Schwank MonsterFans work.

[Watch time 2 min]

MonsterFans GD Series highlights

Geared-Drive HVLS Fan

Discover our MonsterFans DNA


  • Helical Inline Reducer motor
  • Diameter 8–24 feet [2.4–7.3 meters]
  • 53-105 RPM
  • 5 airfoil modulating trailing edge blades
  • Unbreakable alloy hub [713 cast aluminum alloy]
  • Whisper-quiet operation with 62-63 dBA
  • Certified by UL and CSA


  • Lifetime warranty on blades, hub, and mounting system
  • 5-year warranty on motor, gearbox, and control panel


  • Minimal maintenance [recommended inspection every 20,000 hrs]
  • Five airfoil blades are larger at 10¼” wide for Monster air movement
  • Blade design offers a unique angle of attack up to 23°and angled up to 23°
  • Geared motor offers protection against dust, water, and vapors for indoor or outdoor use



MonsterFans GD Series resources

Explore product brochures, case studies & technical information.


Click on the image to view and download PDF.


Technical documents

Installation Manual

Electrical Manual

Standard Mount Installation

Purlin Mount Installation


Technical Spec

AutoCAD Drawings [DWG] 

AutoCAD Drawings [PDF]

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