straight channel body incl. factory-fitted Seal System sealing sleeve with construction period protection for installation in screed, consisting of: completely closed channel body made of polished stainless steel, capillary protection edge to prevent capillary water penetration under the tiles, backflow-proof secondary drainage via the glass-fiber reinforced plastic hard shell, Mounting feet and anchoring in the screed, centered gutter connector for connecting the drain, inner slope to improve water drainage and self-cleaning effect, immersion pipe seal, optionally with secondary drainage