Abstract: An horizontal endless belt vacuum filter comprises an endless conveyor belt having a grooved bottom pierced with orifices for the liquid to flow and a table for supporting the upper side of this conveyor belt. This belt comprises, in its central part, a longitudinal vacuum box of which the upper inlet orifice is located beneath the orifices pierced in the belt and is defined between two substantially horizontal lateral flanges. On either side of the vacuum box are provided horizontal longitudinal elements. Plastic guide strips are mounted on the upper flanges of the vacuum box and of the longitudinal elements of the support table.The guide strips are simply fitted on the upper flanges of the vacuum box and of the longitudinal elements, and maintained by simple friction and abutment, without any additional fixing means.The guide strips on which the conveyor belt slides are advantageously snapped on the edges of the flange.