MAINTENANCE HOLE – MAXIMUM PIPE SIZES

NOTES

  1. Knockouts for small diameter pipe leads 300mm and smaller can be provided in addition to what is shown.
  2. All dimensions are in millimeters unless otherwise shown.

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Maintenance Hole Size (mm)Maximum Pipe Size For Straight ThroughMaximum Pipe Size For Right Angle
1200
1500
1800
2400
3000
3600
2400 x 1800
3000 x 1800
3000 x 2400