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Type M according to NEN EN 1433. High-quality fiber-reinforced concrete C35/45. With 5mm cast iron edge protection. Equipped with cast iron long-rod grating, opening 26/12mm. Screwed locking with four bolts per meter for extreme loads and a secure hold of the grating in the gutter. Inlet diameter 384 cm²/m. Internal width 100mm. External dimensions L x W x H = 500x158/164x160mm. Kiwa certificate in accordance with BRL 5070. Provided with CE marking. Weight 26kg.