The only and safe solution
To avoid man hole entry, rubble plates are installed at first.
They prevent any debris falling into the chamber.
A rubber seal firmly closes the joint and avoids gases
escaping causing harm to employees.
• no man hole entry
• avoid debris or tools to fall into shaft
• solid three point attachment bolts
• easy removal of rubble
• flexible towards asymmetric shafts
• three standard sizes on stock
• effective against gases and smell