Wall duct for ventilation of room, has outer grille with circumferential sealing lip, where circumferential sealing lip is measured and designed such that sealing lip is adjoined with tube

摘要

The wall duct has an outer grille (20) with a circumferential sealing lip (30). The circumferential sealing lip is measured and designed such that the sealing lip is adjoined with a tube (10) without exceeding the outer diameter of the outer grille or the tube. The tube has two openings (12,14), where the former opening is covered by the outer grille. Independent claims are included for: (1) a basic equipment for assembling wall duct; and (2) a method for assembling a wall duct.