Register wells What is a manhole and what is it for? A register well or inspection chamber has two main functions:It serves as access to underground infrastructure for maintenance, repair and inspection.It is responsible for providing ventilation to sewerage networks, preventing the accumulation of toxic, potentially explosive gases.They are used in various underground installations: sewer system pipes, electricity distribution networks, telephones or natural gas. We advise you Types of Register Wells We have different types of prefabricated concrete wells, according to your needs: Register Well HM Tongue And Groove Register Well HM & HA with elastic seal