Have any of you guys ever installed one of these shallow inspection chambers?
http://www.toolstation.com/shop/Roo...+Chamber+Riser+110mm+600mm/d250/sd2868/p83067
Thanks
James
http://www.toolstation.com/shop/Roo...+Chamber+Riser+110mm+600mm/d250/sd2868/p83067
Thanks
James