Metal Back Box 25mm 35mm 47mm 1G 2G Dual 1G+1G 2G+1G Galvanised Steel - Choice
Galvanised Steel. 47mm Single 48 x 72 x 72mm 6 x 20mm + 6 x 25mm. 47mm Double 48 x 132 x 72mm 10 x 20mm + 6 x 25mm. 35mm Single 36 x 72 x 72mm 9 x 20mm + 3 x 25mm. 35mm Double 36 x 132 x 72mm 13 x 20mm + 3 x 25mm.