Description 95mm Frame Depth: Recessed Square to Round PPI Chamber Covers for Block Paving & Slabbed Areas. Usage: For areas with infrequent slow moving traffic up to 5 tonnes GLVW    Designed for PPI chambers 80mm Deep Recessed lids enabling block paving / slab infill Square top to aid block pavior cutting Circular clear opening to fit proprietary inspection chambers Recessed lids with robust lifting eyes Angled inner of lid to aid cover removal Fully flanged manhole frames Manufactured under an ISO 9001:2000 Quality System Finish: Hot dipped galvanised to BS EN ISO 1461 as standard