13September 2018 ♥700 CommentsBy admin 1/2″ Square .500″ (12.700 mm) 11/16″ centers (17.463 mm) 53% open16, 20 ga. Steel Category: Square Tag: 1/2 Square Related products29/64″ Square.453″ (11.509 mm) 1/2″ centers (12.700 mm) 81% open22 ga. Steel Read more3/4″ Square.750″ (19.050 mm) 1″ centers (25.400 mm) 56% open12, 16 ga. Steel Read more5/16″ Square.313″ (7.938 mm) 11/32″ centers (8.731 mm) 83% open22 ga. Steel Read more1/8″ Square .125″ (3.175 mm) 5/32″ centers (3.969 mm) 64% open 22, 24 ga. Steel 20 B&S ga. Aluminum Read more