U.S. FOUNDRY & MANUFACTURING CORPORATION
CAST IRON
CI-19
TRENCH GRATE SOLUTIONS
CONT.
OTHER HEAVY DUTY OPTIONS
“
A”
“
B”
“
C”
FRAME
GRATE
SEAT
CLEAR FLOW
NUMBER NUMBER WIDTH HEIGHT OPENING AREA
6500
6105
10
2
r
8
75
6500
6120
12
2
r
10
100
6510
6185
13
1
w
11
100
6505
6141
14
2
12
120
6500
6140
14
2
r
12
120
6515
6145
16
1
1
14
130
6515
6226
19
1
1
17
180
6545
6227
20
2
2
18
160
6515
6235
24
1
1
22
225
6530
6195*
26
1
1
24
340
6500
6250
27
2
3
25
220
6535
6209
27
c
2
24
1
455
6515
6256
33
1
1
31
370
6525
6180
39
25/8
37
270
STEEL RETICULINE GRATES
“
A”
“
B”
“
C”
GRATE
SEAT
CLEAR
FLOW
NUMBER
WIDTH
HEIGHT
OPENING
AREA
6815
10
2
8
163
6816
12
2
10
204
6817
14
2
12
245
6818
17
2
15
306
6819
20
2
18
367
6820
23
2
21
428
6821
26
2
24
490
6822
30
2
27
551
6823
33
2
30
612
6824
36
2
33
673
6825
39
2
36
734
6826
45
2
42
857
6827
51
2
49
1000
Please note: Steel grates are an excellent alternative when maximum flow
area is needed.
A
B
A
24
C
*
Frame and grate provided in 36” lengths.
Highlighted items not restricted grate openings.