HEAVY DUTY STANDARDS
NARROW SLOTTED GRATES
SEAT HEIGHT
SEAT HEIGHT
WIDTH
WIDTH
CLEAR OPENING
CLEAR OPENING
TYPICAL TRENCH SECTION
TYPICAL TRENCH SECTION
24
GRATE NUMBER
SEAT HEIGHT
CLEAR OPENING
FLOW AREA
WIDTH
6451 6452 6453 6454 6455 6456 6457 6458 6461
8 10 12 14 17 20 23 26 30
1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 2
6 8
70 75
WIDTH
10 12 15 18 21 24 27
100 116 132 138 161 192 212
GRATE NUMBER
SEAT HEIGHT
CLEAR OPENING
FLOW AREA
WIDTH
6266 6267 6268 6269
8 10 12 14
1 1/2 1 1/2 1 1/2 1 1/2
6 8
30 35 50 60
10 12
BOLTING TAB (T YP. )
All grates have 3/8” wide slots and are commonly used in pedestrian applications or where ADA compliance is required.
STEEL FRAME & GRATE
OPTIONAL ENDPLATE
OTHER HEAVY DUTY OPTIONS
BOLT
FRAME NUMBER
GRATE NUMBER
SEAT HEIGHT 2 3/16 2 3/16 1 3/4 2 2 3/16
CLEAR OPENING
FLOW AREA
WIDTH
75 100 100 120 120 130 180 160 225 340 220 455 370 270
8 10 11 12 12 14 17 18 22 24 25 24 1/2
* Frame and grate provided in 36” lengths. 6500 6500 6510 6505 6500 6515 6515 6545 6515 6530 6500 6535 6515 6525 6105 6120 6185 6141 6140 6145 6226 6227 6235 6195* 6250 6209 6256 6180 10 12 13 14 14 16 19 20 24 26 27 27 7/8 33 39 1 1/2 1 1/2 2 1/4 1 1/2 1 1/2 2 1/8 2 1 1/2 2 5/8
OPTIONAL ENDPLATE
CAST IRON FRAME & GRATE
OPTIONAL ENDPLATE
BOLTED CAST IRON FRAME & GRATE
31 37
NOTE : DO NOT DISASSEMBLE BOLTED UNITS DURING FORMING PROCEDURES.
TRENCH GRATES
20
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