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For building cunette channels at railway tracks or other roads. The trench drains UCB are in form of letter U and the trench drains UCH are in form angular of letter J. The drains have 4 draining holes with nominal inside diameter 100 mm and gradient 5% inwards in lower part. For covering of drains there are intended the covers UC, whereas three covers or the covers UC-a are needed for one drain, whereas for one drain five covers are needed. The drains are made either with manipulation hooks or with clips DEHA.