Thermodrain manhole covers are available in all standard sizes with load bearing capacity ranging from 2.5 tons to 60 tons (E 600).
They are circular, square and rectangular shapes available with double seal arrangements.
All covers are available with double seal.
Covers can be provided with key locking or bolt locking arrangnment.
The lifting keyholes are in High Strength Plastic Alloy / Stainless Steel, socket type to avoid wear & tear in the lifting area also keyholes have closed bottom (not thru & thru).
If required the covers are made available with bolt locking arrangement.
Permanent set is zero in all sizes & load bearing.
Self pigmented/non painted and Non brittle.