Helfer System (15" Full Round Duct)

• The Helfer duct rocket penetrates the center of the bin to release air into the core
• Fan efficiency is increased by as much as 20%
• Static pressure is lowered
• Drying time is reduced by as much as 50%
• 15" round floor ducts push air up from the floor and out towards the bin walls

All of the systems below come standard with a 48" Helfer duct. Add 24" or 48" extension for all tall bins.
 

Specifications                     Matching Systems to Bin Size

Bin Diameter         Model               Bin Diameter          Model
14' diameter          GG 3000           21' diameter          GG 5000
16' diameter          GG 3500           24' diameter          GG 5500
18' diameter          GG 4500           27' diameter          GG 5600
19' diameter          GG 4000           30' diameter          GG 5700

Wall Vents

• Reduce static pressure
• Maximize air flow
• Reduce drying time by eliminating moisture movement to the top of the bin
• Easily opened and closed from ground level with a unique rope system
• Can be used to enhance other aeration systems
• 3 vents per bin recommended (18' diameter or larger)