An installation for coating a longitudinally-running, strip-shaped metal product includes a tank containing a coating in liquid form, into which the metal product is dipped, a wiping system disposed at a vertical outlet of the product from the tank and intended to wipe each face of the strip-shaped product, at least one ancillary device disposed at an outlet of the product from the wiping system in a manner facing one of the faces of the product, and a holding device holding the wiping system and the ancillary device. The holding device includes a securing unit forming a common lateral support for the wiping system and each ancillary device by using multiple securing points.