FIELD: water supply; sewerage.
SUBSTANCE: invention relates to drainage devices. Cover of slotted tray comprises at least one horizontal sheet section and two vertical sheet sections, which are connected to each other by means of connecting devices and have between them a slot for liquid removal into tray body. Cover comprises levelling element for alignment of slotted trays with first and second slots aligned in one line. Levelling element projects from end face of first slot and is inserted into end face of the second slot. Aligning element by means of connecting device of vertical sheet sections is fixed on them, wherein levelling element is bent from sheet metal in form of hollow body.
EFFECT: high quality of drainage.
9 cl, 9 dwg
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