Kitchen ventilator with inlet throat choke attachments

In a kitchen venilator having a baffle type grease extractor with an elongated inlet throat opening of uniform width extending above a row of cooking units wherein some of said cooking units produce less air pollution than other of said units and wherein said width of said throat opening is determined by the spacing of a damper baffle of uniform width above the front edge of a grease trough which forms the lower boundary of said throat opening, said ventilator having a back wall behind said damper baffle and grease trough and said damper baffle in open position being inclined downward and rearward from the upper boundary of said throat opening toward said back wall beneath a grease extracting baffle of uniform width projecting forward from said back wall, and said ventilator having an upper grease extracting baffle projecting rearward toward said back wall from said front wall above said damper baffle and back wall baffle;

• the improvement comprising a pair of supplemental and removable throat choke attachments for reducing the air flow over said less polluting cooking units, a first of said supplemental throat choke attachments comprising an elongated L-shaped angle plate extending along the front face of a portion of said damper baffle which is above said less polluting cooking units, said attachment protruding outward from said front face of the damper baffle toward said front edge of said grease trough to reduce the width of said throat opening along said portion of the damper baffle, and the second of said supplemental throat choke attachments comprising an elongated L-shaped angle plate protruding forward below said back wall baffle toward the lower edge of said portion of said damper baffle in said open position.