U.S. FOUNDRY & MANUFACTURING CORPORATION
CATCH BASINS
CB-31
USF 4137 FRAME AND GRATE SERIES
GRATE LOAD FLOW
NUMBER RATING AREA
6237
HEAVY DUTY 445
6238
HEAVY DUTY 445
23 1/2
31 3/4
9 7/8
23 3/4
35 1/2
7
44
35 3/4
1 3/4
1 1/2
1 1/2
23 1/2
31 3/4
23 3/4
9 7/8
35 1/2
7
44
1 1/2
35 3/4
1 3/4
USF 4137-6237
CONCAVE GRATE
USF 4137-6238
USF 4139 FRAME AND GRATE SERIES
USF 4138 FRAME AND 6218 GRATE
34 1/2
36
44
36
3/4
1 3/8
2
6 1/4
32
24
22 1/2
24
4 5/8
SOUTH CAROLINA – DEPARTMENT OF HIGHWAY
24
X 36 DROP INLET – STANDARD
4139-6429
4139-6002
GRATE LOAD FLOW
NUMBER RATING AREA
6218
HEAVY DUTY 380
41 1/2
36
34
35 3/4
1 1/4
1 1/2
4
22
24
29 1/2
23 3/4
6 9/16
23 3/4
41 1/2
34
35 3/4
6 1/8
22
1/2
36
29 1/2
24
4
1 1/2
GRATE LOAD FLOW
NUMBER RATING AREA
6002
HEAVY DUTY 233
6429
HEAVY DUTY 400
1.
Restricted grate openings.