CLASS 150# CLASS 300# CLASS 600# CLASS 900# CLASS 1500# CLASS 2500# CLASS 150# BLIND FLANGE ANSI B16.50 ITEM SIZE OD Thickness Weight 1/2″ 150# Paddle Blind 1/2″ 1-3/4″ 1/4″ 1 3/4″ 150# Paddle Blind 3/4″ 2-1/8″ 1/4″ 1 1″ 150# Paddle Blind 1″ 2-1/2″ 1/4″ 1 1-1/4″ 150# Paddle Blind 1-1/4″ 2-7/8″