Manhole Cover 300 x 300 mm; Walk in Transparent Dome PVC, grau : Amazon.co.uk: DIY & Tools
Polypipe U/G Drain 320mm Square Pvc Cover & Frame
Clark Drain CD300SR Clear Opening 300mm x 300mm x 80mm (Overall Size Including Frame is 438mm x 438mm x 93mm Recessed Manhole Cover for Concrete or ...