Polypropylene Inspection Chambers- (PPIC) Description The majority of properties built since the 80's have PPIC's installed at strategic points along a drainage system to enable inspection / rodding. PPIC's consist of a base and a number of 'raisers' dependant on the depth of the underground pipes. Pedestrian, Driveway & Medium Duty Covers as specified Products suit 450mm & 300mm diameter chambers as detailed Plastic, steel & iron products available Revolve “ square to round covers ChamberMATE “ recessed cover for turf, bark & gravel infill etc