This kit contains
14 x 10 Return Air Grille (x1)
5m of insulated ducting - 150mm (6”) diameter
6” flat oval duct connecting spigot (x1)
Plenum box for 12 x 6 grille (x1)
12 x 6 Air Delivery Grille (x1)
Note on grille sizes:
Grille sizes stated reflect the size of hole cut into the surface. The grille has a flange which is 1/2” all round. So a 10 x 4 grille needs a hole 10” x 4” and the visible part of the grille will need a surface area of 11” x 5”. Grille sizes are refered to in inches as they are American products and this is their format.