Precast Concrete Products
Maintenance Hole - Maximum Pipe Sizes
Available at Ayr and Carp
Maintenance Hole Size
(mm)
Maximum Pipe Size
For Straight Through
Maximum Pipe Size
For Right Angle
1200
1500
1800
2400
3000
3600
2400 x 1800
3000 x 1800
3000 x 2400
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.