Clear opening size is as below：
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Class C250 specifications
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Type
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Dimensions (mm)
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H
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e
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A X A
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O X O
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C X C
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Single Sealed, Square
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500X500
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404X404
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435X435
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46
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39
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Single Sealed, Square
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600X600
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504X504
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535X535
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51
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44
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Single Sealed, Square
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700X700
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604X604
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635X635
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56
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49
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Single Sealed, Square
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800X800
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704X704
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734X734
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65
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58
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Single Sealed, Square
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900X900
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804X804
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834X834
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70
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62
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Single Sealed, Rectangular
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700X500
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400X600
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436X636
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57
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30
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Single Sealed, Rectangular
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600X800
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500X700
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560X764
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60
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52
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Single Sealed, Square, Recessed
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400X400
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300X300
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376X376
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90
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84
|
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Single Sealed, Square, Recessed
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500X500
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400X400
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476X476
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90
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84
|
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Single Sealed, Square, Recessed
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600X600
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500X500
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576X576
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90
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84
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Single Sealed, Square, Recessed
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700X700
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600X600
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676X676
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90
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84
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Single Sealed, Rectangular
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729X529
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628X428
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668X468
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78
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33
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Single Sealed, Rectangular
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667X467
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368X566
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400X600
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83
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32
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Single Sealed, Rectangular
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640X440
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286X492
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528X328
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77
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28
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Single Sealed, Rectangular
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600X400
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492X286
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528X328
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81
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30
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Single Sealed, Rectangular
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1300X900
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1130X730
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800X395X3
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69
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34
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Single Sealed, Square
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400X400
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300X300
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357X357
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77
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30
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Single Sealed, Square
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500X500
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400X400
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457X457
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77
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30
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Single Sealed, Square
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600X600
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500X500
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557X557
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77
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30
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Single Sealed, Round cover, Round Base
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Ø750
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Ø600
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Ø660
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100
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18
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Single Sealed, Round cover, Round Base
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Ø780
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Ø600
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Ø660
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100
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18
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Areas which can only be use by pedestrians and pedal cyclists.
– GROUP 2: (class B 125 minimum) Test 12.5 metric ton
Footways, pedestrian areas and comparable areas, car parks or car parking decks.
– GROUP 3: (class C 250 minimum) Test 25 metric ton
For gully tops installed in the area kerbside channels of roads which when measured from the kerb edge, extend a maximum of 0.5m
into the carriageway and a maximum of 0.2m into the footway.
– GROUP 4: (class D 400 minimum) Test 40 metric ton
Carriageway of roads (including pedestrian street), hard shoulders and parking areas, for all types of road vehicles.
– GROUP 5: (class E 600 minimum) Test 60 metric ton
Areas imposing particularly high wheel loads, e.g. docks, aircraft pavements.
– GROUP 6: (class F 900 minimum) Test 90 metric ton
Areas imposing particularly high wheel loads, e.g. Aircraft pavements.
The standard specifies that the designer is responsible for making the appropriate choice of class and where there is any doubt regarding the class to be used, a higher class should be selected.
1) Solid Cover Series
* Ductile Iron
* Two Lifting Keyholes
* Cut-Corner Design (Regular corner covers are also available)
* Diamond raised top design
2) Double Sealed Series
* Ductile Iron
* Double Sealed
* 2 Lifting Key Holes
* Cut-Corner Design (Regular corner covers are also available)
Some types come with GRP sealing plate.
3) Double Triangular Series
* Ductile Iron
* Double Triangular
* Square Plate raised top design
* Special inscription or different identification is available
4) Round Cover Series
* Ductile Iron
* Double Triangular
* Square Plate raised top design
* Special inscription or different identification is available
Round frames, Square frames and Octagonal frames are available.
Some types come with GRP sealing plate.
