Colt International Limited - Manufacturers of louvre systems, smoke control, solar shading, air handling. UK Ansul Incorporated - A US manufacturer of portable fire extinguishers and fixed extinguishing systems. Greenheck - Manufactures fans and ventilators, centrifugal fans, vane axial fans, dampers, louvers, kitchen ventilation systems, energy recovery ventilators and make up air units for the commercial and industrial market. Halton Company - Food service and commercial kitchen ventilation products. K-Vent - Manufacturer of kitchen ventilation equipment. Installation available. Premium Air Systems - Manufacturer of products for the restaurant kitchen including make-up air units, custom designed hoods, exhaust fans. Complete design and installation. Captive-Aire Systems Inc. - Commercial and industrial ventilation equipment. American Hood Systems, Inc. - Commercial kitchen exhaust hoods and ventilation systems, including make-up air and fire suppression.