ANSI Polypropylene Backing Flange: 50mmBFPA050
ANSI Polypropylene Backing Flange: 450mmBFPA450
Table D Backing Flange Galvanised: 560mmBFGD560
PN16 Backing Flange Galvanised: 900mmBFG16900
ANSI Polypropylene Backing Flange: 63mmBFPA063