ANSI Polypropylene Backing Flange: 280mmBFPA280
ANSI Polypropylene Backing Flange: 90mmBFPA090
Table D Backing Flange Galvanised: 125mmBFGD125
Table D Backing Flange Stainless: 560mmBFS316D560
Table D Backing Flange Galvanised: 32mmBFGD/E032