"Used this base with the risers and cover to put in an already existing pipe run. Without the adjustable inlets it would be almost impossible to fit .I also used a slip coupling as well.I only needed to dig a hole about 600m/m. Well worth the bit extra to make the job easier."
"The fact that the inlet holes are at different levels makes this item a pain to use where there isn't much fall to start with. We actually had to bring pipes above ground level and make up the ground to get it to work.
Good value though compared with the competition and OK if there's plenty of fall."