Rated 5 out of 5Â by Nutbush Mini access chamber good value
The mini access chamber and risers are easy to use and can save you money on buying slight bends as the chamber outlets can be moved slightly on the knuckles allowing easy fitting as a builder in the past i have always just purchased them from my local builders merchants .from now on i will get all underground pipes from screwfix Top tip always get more bends than you need you can take the surplus back rather than having to go back when you need a bend you haven't purchased.
Rated 3 out of 5Â by pavilion Poor value
If you end up with one of the chamber bases and you need a riser, these are the only ones that fit.
Expensive for what they are. Work well though.
There are cheaper suppliers too.