"Chamber base with 190mm invert and designed for 315mm access and inspection chambers in 110mm drainage layouts, comes with 2 socket plugs. Quick & easy to install. Lightweight. Durable."
"A sealed lid for the 315mm diameter chamber assembly for use on areas where light traffic only (35kN). Quick & easy to install. Lightweight. Durable."
"A sealed lid for the 315mm diameter chamber assembly for use on pedestrianised areas only. Quick & easy to install. Lightweight. Airtight - double sealed & can be used for internal areas. 35kN loading capability. Height & tilt adjustable frame."