A vehicle door , comprising: - a mount comprising a lower part and an upper frame defining an opening , this upper frame comprising two ascending posts connected by an upper rail , - an encapsulated fixed window module , said module having a general P-shape and comprising a fixed window mounted in a part of said opening, and an ascending profile extending along an ascending edge of the fixed window and extending from the opening to the lower part of the mount, - a movable window capable of closing the remainder of said opening, this window comprising two ascending edges along which guides are fixed, - a sliding joint having a general U-shape and comprising two ascending strands connected by an upper strand , the ascending strands having a general C-shape in cross-section and each comprising a longitudinal recess for receiving and guiding one of said guides, a first of the ascending strands extending along a first of the ascending posts, and a second of the ascending strands extending along said ascending profile , the fixed and movable windows comprising outer surfaces which are aligned with each other as well as with an outer surface of a first trim attached to the first ascending strand and fixed to said first ascending strand , and an outer surface of a second trim attached to the second ascending strand and fixed to said ascending profile , said ascending profile comprises a body made of rigid plastic and an overmolded coating which is configured to fix the plastic body to the fixed window , said body comprises an ascending slot for receiving a tab of said second trim , said slot extends in a plane substantially perpendicular to said fixed window and comprises a first side wall substantially aligned with said ascending edge or a portion (27b2) of said overmolded coating . - a mount comprising a lower part and an upper frame defining an opening , this upper frame comprising two ascending posts connected by an upper rail , - an encapsulated fixed window module , said module having a general P-shape and comprising a fixed window mounted in a part of said opening, and an ascending profile extending along an ascending edge of the fixed window and extending from the opening to the lower part of the mount, - a movable window capable of closing the remainder of said opening, this window comprising two ascending edges along which guides are fixed, - a sliding joint having a general U-shape and comprising two ascending strands connected by an upper strand , the ascending strands having a general C-shape in cross-section and each comprising a longitudinal recess for receiving and guiding one of said guides, a first of the ascending strands extending along a first of the ascending posts, and a second of the ascending strands extending along said ascending profile , the fixed and movable windows comprising outer surfaces which are aligned with each other as well as with an outer surface of a first trim attached to the first ascending strand and fixed to said first ascending strand , and an outer surface of a second trim attached to the second ascending strand and fixed to said ascending profile , said ascending profile comprises a body made of rigid plastic and an overmolded coating which is configured to fix the plastic body to the fixed window , said body comprises an ascending slot for receiving a tab of said second trim , said slot extends in a plane substantially perpendicular to said fixed window and comprises a first side wall substantially aligned with said ascending edge or a portion (27b2) of said overmolded coating . <EOS>