A square inlet grate and support frame assembly features overall dimensions of 1050 by 1050 millimeters and a clear opening width of 900 millimeters. The frame height is 100 millimeters. A minimum waterway area of 0.27 square meters is specified for drainage capacity.
SECTION A INLET GRATE AND FRAME A E1 MINIMUM WATERWAY AREA 0.27 SM 1050 900 100 1050 1050 F G
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