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Type M according to NEN EN 1433. High-quality fiber-reinforced concrete C35/45. Suitable for corner and T-pieces. Equipped with two lateral holes of 200 mm and one end cap. With 5 mm cast iron edge protection. Equipped with cast iron mesh grating, opening 30/20 mm with patented screwless long rod lock. Inlet cross-section 960 cm²/m. Internal width 200 mm. External dimensions L x W x H = 500 x 258 / 264 x 310 mm. Kiwa certificate in accordance with BRL 5070. Provided with CE marking. Weight 49 kg.