Cushion Boxes

Cushion Boxes
Shop ducted air conditioning cushion boxes at FastFlex, Melbourne's trade HVAC wholesaler. Cushion boxes are the plenum chambers that sit between the flexible duct and the diffuser or grille, providing a transition point that helps regulate airflow and reduce noise at the outlet. This range includes metal cushion boxes in plain, internally insulated, and externally insulated configurations, plastic cushion boxes, and swirl cushion boxes — covering standard residential ducted systems through to light commercial installations across Victoria. Choosing the right cushion box insulation type matters for condensation control, particularly in high-humidity environments or installations where duct temperatures vary significantly. Available at wholesale trade pricing with same-day dispatch from our Thomastown warehouse. Trade account holders get access to live online pricing. Call us on 03 9464 5400 or order online today.