Easy Fit Chambers are readily mounted by just Digging the earth & fixing it. No Cracks or Chip out is formed due to age, like brick or concrete chambers. No need to run behind a mason, any lame person/plumber can fix it. 100 % water proof, Glossy smooth inside & declined to outlet pipe so that, no clogging can take place. Can take any vehicle loads. Can be used immediately no curing is required.