Plastic Grilles & Diffusers

They are the visible outlets and inlets for air distribution, designed to direct supply air or return air efficiently while complementing the room’s aesthetics.

Plastic grilles are lightweight, corrosion-resistant, non-conductive, and cost-effective. They are especially suitable for coastal areas, bathrooms, and other moisture-prone environments.

High-quality moulded diffusers are engineered with aerodynamic vanes to distribute air evenly. Performance depends on correct sizing and selection but is comparable to metal alternatives in residential and light commercial projects.

Plastic grilles and diffusers are offered in a wide range of sizes to fit standard duct openings, including ceiling diffusers, wall registers, and return grilles. Options include fixed or adjustable blades, with round, square, and bar designs.

In Australia, products are generally tested under AS 4254 and AS 1668 system requirements. Internationally, relevant references include ISO 5219 for air diffusion. Fire ratings may also be required depending on the building code.

Maintenance involves simple cleaning with a damp cloth or mild detergent. Unlike metal grilles, plastic models do not corrode, but they should be checked periodically for dust buildup and secure mounting.