220mm x 90mm Megaduct Double Airbrick Adapter *Large Flat Channel Ducting*
220mm x 90mm Megaduct Vertical 45° Bend *Large Flat Channel Ducting*
220mm x 90mm Megaduct Plenum with 125mm Fixed Spigot *Large Flat Channel Ducting*
220mm x 90mm Megaduct Equal T Piece *Large Flat Channel Ducting*
125mm Round Plastic Ceiling Valve With Fixing Ring