Steel Grating Patterns

We have Pattern A and Pattern C in stock, but supply Patterns B and D as well. Pattern A and B both have the load bars spaced at 30 mm centres. The twist rod is spaced at 100 mm centres for Pattern A and 50 mm for Pattern B. Pattern C and D both have the load bars spaced at 40 mm centres. The twist rod is spaced at 100 mm centres for C Pattern and 50 mm centres for D Pattern.