- Lid made from sheet metal, 2.5 mm thick, elevated in the centre, with internal transverse bracing
- From 800 × 800 mm or Ø 800 mm with gas pressure springs.
- Self-locking fastener, locking mechanism can only be disengaged by hand.
- Frame prepared for setting in concrete and attachment with rawlplugs.
- EPDM seal on the underside of the lid
|Inside shaft size:||800 x 800 mm|