manhole risers

[colw1]

hi I have hade a plastic round inspection chamber put in and have found the riser is about 75mm to high for where I want it to finish but someone said these are possible to cut down , I have had a look at it and cannot see as this is possible could anyone advise me if this is possible or can smaller risers be bought
The chamber is made by hunter and the risers seem to be 200mm high
If there any links this would be very helpfull
thanks col

 

[noseall]

we cut (or melt! ) ours down with an angle grinder.

don't do it in shorts though. it hurts.

 

[mikric]

we cut (or melt! ) ours down with an angle grinder.

lol have done that a few times but since trying it with a cordless reciprocating saw from the inside in situ have found this easier and more accurate if you need to fine tune it