ANSI 150 Backing Flange Stainless: 400mmBFS316A400
ANSI 150 Backing Flange Stainless: 180mmBFS316A180
DIN16 Backing Flange Galvanised: 225mmBFGDIN16225
DIN16 Backing Flange Galvanised: 160mmBFGDIN16160