Manufacturers of Diffusers, Grilles,Linear Slot Diffusers, Linear Grilles, Filters,VCD's Access Doors & Flexible Duct.Additional Information:Air Master Product Range also Includes Round CeilingDiffusers, Disc Valves, Jet Diffusers, Light TrofferDiffusers, Plenum Boxes, Fire Dampers, etc. alsoAuthorized Dealers for MADEL & SEIHO Air Outlets.