Plastic Cushion Box

Plastic Cushion Box

The Westaflex Plastic Cushion Box is a lightweight plastic plenum chamber that connects flexible ductwork to ceiling diffusers and grilles, providing a transition point that helps regulate airflow and reduce outlet noise in residential ducted air conditioning systems.

Please note: This is a discontinued Westaflex product. Limited stock is available — once current inventory is sold, no further supply will be available. If you require a metal alternative, see our range of metal cushion boxes in plain, internally insulated, and externally insulated configurations.

Suitable for: Residential ducted air conditioning systems. Compatible with standard round duct outlets and common ceiling diffuser sizes.

Trade note: Available in four sizes to suit 225x225mm and 300x300mm face openings with 150mm, 200mm, or 250mm spigot connections. Confirm size requirements before ordering given limited remaining stock.

Specification Detail
Brand Westaflex
Material Plastic
Available sizes 225x225-150mm, 225x225-200mm, 300x300-200mm, 300x300-250mm
Application Residential ducted air conditioning
Status Discontinued — limited stock only
Image Part Number Product Name Size Colour Kilowatt Litres Unit Price Quantity
PCB96
Plastic Cushion Box 225X225-150*
225x225-150*
each
$20.90 ex GST
PCB98
Plastic Cushion Box 225X225-200*
225x225-200*
each
$21.31 ex GST
PCB128
Plastic Cushion Box 300X300 - 200*
300x300 - 200*
each
$23.93 ex GST
PCB1210
Plastic Cushion Box 300X300 - 250*
300x300 - 250*
each
$43.50 ex GST