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Self-supporting type I. Internal dimensions wxh=80x120cm (external dimensions wxh=104x135cm). Working length 3m. Load class E600 according to EN1433. Without concrete edge profile. Reinforced self-compacting concrete C60/75. Environmental classes XD3-XF4-XC4-XA3. Durability W+R. Tongue/groove connection. Hoisting facility: ball joint anchors type DEHA. Installation instructions according to manufacturer's specifications. Standardisation in accordance with EN1433. For surface-mounted lid. Weight 3600kg. Corner reinforcements 15cmx15cm Industrial grey concrete, not architectural concrete. Colour shading and air bubble formation possible. In an industrial environment and/or for very intensive use, we recommend the version with galvanised edge profile.