The patented *Baut Chain Pull Hopper can be used in most situations that a chain operated, center pivoted ventilator would be used. The added advantages of this system are an uninterrupted weather strip sealant around all perimeters and the opportunity to mount a flush exterior bug screen. Chain operated ventilators are ideal for clerestories and other out-of-reach areas where the use of a pole may also be awkward. The chain pull ventilator may be a stand alone unit or may be incorporated into a complete window system. Hand Operated Project Out Awning Type or Project In Hopper Type as well as Pole Operated Project In Hopper Type are also available.

*U.S. Patent #302,324

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