Klein Tools 60821 Hard Hat Turbo Fan SlimDuct The control boards are designed

The control boards are designed as automated gas ignition controls that monitor the ignition sequence including the inducer

Form-in-place gasket option for select applications

high-strength engineering plastics adds toughness to the main body and trigger

3/4 and 13/16-Inch

Klein Tools 60821 Hard Hat Turbo Fan SlimDuct The control boards are designedKlein Tools 60821 Hard Hat Turbo Fan Klein Tools' Hard Hat Turbo Fan fits on the brim of most hard hats and safety helmets, and can also be used with the included dual mount strap and mounting bracket for shells without a brim. The Hinged Adapter Bracket mounts directly to the accessory mounts on Klein Tools hard hats and safety helmets, as well as the Dual Mount Strap for hard hats without mounts. The fan is powered by Klein's Modular Battery (Cat.