What size inspection chamber cover?

[abraxas]

I've had an open inspection chamber for a while now and figured it was time I got round to removing the paving slab 'lid' and actually buying a cover but I can't for the life of me work out what size I need.

Online they seem to come as standard at 450 or 300 but the end of the chambier riser is 310 internally and around 355 externally.

I've attached some pictures of the measurements, any help would be appreciated!

 

[HERTS P&D]

See if these people can help you.

Ductile Iron Manhole Covers | Manhole Covers Ltd Trade Catalogue

Manhole Covers holds an extensive stock of ductile iron and cast iron manhole covers and frames. Our range of ductile iron manhole covers includes Circular, Solid Top and Double Triangular access covers and frames for domestic and trade. For your manhole cover needs, visit our online Retail Shop.

www.manholecovers.co.uk

Andy

 

[Deleted member 267285]

Is that just a riser? Perhaps one of these then?

 

[abraxas]

Is that just a riser? Perhaps one of these then?

Yeah it's a riser. That cover you linked is 450mm so won't fit?

 

[Deleted member 267285]

Yeah it's a riser. That cover you linked is 450mm so won't fit?

Have a scroll down a bit further, gives frequently bought together, and the riser is 450mm?

 

[fixitflav]

Have a scroll down a bit further, gives frequently bought together, and the riser is 450mm?

The 320mm one could do the job, but it doesn't say where the 320mm is measured. I'd prefer to buy one local on the basis of return if it doesn't fit.