Profile: GMTAir Pty Ltd is a manufacturer of air conditioning products. Our product line includes flexible ducting, metal & plastic air diffusion, sheet metal products, motorised dampers and control gears. Our flexible ducting covers plain, insulated & skylight ducting. We offer metal air diffusion products such as lay in 4 way diffusers, wall registers, door grilles, return air grilles, egg crate fixed and removable cores. We supply plastic ceiling, air relief ceiling & circular ABS vents, square to round starters and return air boxes.