Circular air duct series

• Spiral straight tube

• Elbow

• Reducer

• Tee/Cross

• Plain end/Arc end

• Internal connector/External connector

• Air shutter/Checkair valve

• End cover

• Cabin going-through part

• Connector/Duct plug

• Hoop/Hose clamp

• Hose

• Mute duct

Rectangular air duct series

• Straight pipe

• Elbow

• Reducer

• Tee/Cross

• Saddle opening

• Access door

Oval air duct series

• Spiral straight tube

• Elbow

• Reducer

• Tee

• Internal connector/External connector

• Cabin going-through part

• Hoop

• Air shutter

Ventilation accessories

• Air supply outlet/Air return outlet

• Grating

• Other

• Flange

• Air return plenum chamber