U.S. FOUNDRY & MANUFACTURING CORPORATION
CAST IRON
CI-6
RECTANGULAR GRATES SUMMARY
LISTED IN ORDER OF SHORTEST BEARING BAR DIMENSION “A”, LENGTH “B” AND SEAT HEIGHT.
R = RESTRICTED GRATE OPENING.
*
SEE PAGE CI-1 FOR DESCRIPTION OF LOAD RATING.
(-)
DASH UNDER LOAD RATING INDICATES CASTING IS NOT TO BE USED FOR THAT CONFIGURATION.
**
= GRATE SET
6212 54-
R 28 36
1
2 1
t
X 5
2
420
H (-) H
6410 53 28
2
40 2
2
4
c
X 7 605 H H H
6257 52 29 23
w
2
w
1
1
X VAR. 205 H (-) (-)
6277 53 29 32 1
1
1
v
X 8
5
510
L L L
6255 52 29
1
24 2
3
1
w
X 10
w
265 (-)
M H
6461 54-
R 30 24 2 1 X 5
1
212 (-)
H H
6256 53 33 24 1
1
1
1
X 9
2
370 (-)
M (-)
6400 51 33
w
21
w
2
w
1
v
X 31
2
355 (-)
H H
6170 53 35 24 1
w
2
X 8
1
355
L L M
6260 53 36 22 2
2
1
3
X 9
d
285
M H H
6172 53 36 24 1
w
1
d
X 10
1
460
L L H
6450 56-
R 36
d
28
3
2 1/2
X 3
d
240
H (-) H
6295 55-
R 37 28
w
1
2
1
X 6
1
305 (-)
L L
6178 51 37
w
17
w
3
1
1
w
X 35
1
370 (-)
H H
6150 55-
R 39 18 2 1
2
X 6
4
270
L L H
6180 55-
R 39 24 2
d
1
3
X 6 270 H H H
6299** 52 40 52 1
1
1
5
X 16
w
940
L (-) L
6286** 55 40 52 1
1
1
c
X 6
e
940
M (-) H
6308** 55-
R 40 52 2 1
1
X 6
e
850
H (-) H
6300** 52 40 52 2 1
1
X 17 915 L (-) (-)
6332** - 40 52
3
2
Varies 531 H (-) (-)
6290** 56-
R 40 53
1
2 1
w
X 5
3
850
H (-) (-)
6304** 52 40 78 1
1
1
5
X 16
w
1400
L (-) L
6288** 55 40 78 1
1
1
c
X 6
e
1415
M (-) H
6305** 52 40 78 2 1
1
X 17 1370 L (-) (-)
6292** 56-
R 40 78
1
2 1
c
X 5
3
1250
H (-) (-)
6310 56-
R 47 21
1
1
d
1
e
X 4
v
390 (-)
H (-)
2-
SIDED
SHORT
SPAN
2-
SIDED
LONG
SPAN
4-
SIDED
BEARING
GRATE GRATE WIDTH LENGTH SEAT SLOT SIZE FLOW
NUMBER STYLE “A” “B” HEIGHT AREA
LOAD RATING*