300mm Mini Inspection Chamber set for internal useThis chamber set includes all of the components required to form a 300mm mini inspection chamber that can be used inside a premises  - one base section, two 200mm sectional risers and a sealed, 43.5mm deep recessed square PVC cover and frame which can be filled with screed or concrete. The neoprene seals in the cover prevent any unwanted odours from escaping the drainage system.The overall depth of the chamber from the invert level to the top of the manhole cover is 760mm. If you need to make small adjustments to the height then the sectional risers may be cut to size using a standard fine-toothed saw.The main channel of the base is left open and the side inlets are blanked off with integral blanking plugs - simply remove the blanking plug by pushing it out from within the base to open and use the side inlets.The cover has a 5 Tonne load rating.For a quick overview of this product please watch the brief video below; For a more in-depth description guide to the use of mini access chambers please take a look at the more detailed information video below.