110mm x 54mm to 204mm x 60mm Rectangular White Airbrick Adaptor
110mm x 54mm Elbow Bend Female Spigot
110mm x 54mm Rectangular Ducting Flexible Bend
110x54x1mtr Flat Channel (Box of 20)
110mm x 54mm Short Rectangular to 100mm Round Adaptor
110mm x 54mm to 100mm Elbow Bend with male spigot