Polyaire manufacture an extensive range of sheet metal cushion boxes to suit all supply, return, relief and exhaust applications.

This square to round neck adaptor is made from galvanised steel and is available in various sizes.

This square to round neck adaptor is made from galvanised steel and is available in various sizes.

Polyaire manufacture an extensive range of sheet metal cushion boxes to suit all supply, return, relief and exhaust applications.

Polyaire manufacture an extensive range of sheet metal cushion boxes to suit all supply, return, relief and exhaust applications.

Polyaire manufacture an extensive range of sheet metal cushion boxes to suit all supply, return, relief and exhaust applications.

Insulated Uni Boot spigot opposite open end.