A laundry treatment device comprising: • a casing containing a treatment chamber for receiving a load to be treated, said casing including an aperture for accessing said treatment chamber; • a door assembly associated to said casing for opening and closing said aperture, said door assembly comprising: ∘ a door frame (4,5) having a door opening (4a,5a) defining a door opening inner edge (14,15); ∘ a cover ring having a ring opening defining a cover ring inner edge, said cover ring being attached to said door frame (4,5) in such a way that said ring opening substantially corresponds to said door opening (4a,5a); ∘ a door cover closing said door opening (4a,5a) and said ring opening, said door cover having an outer edge, wherein a portion of said door cover outer edge is interposed between a peripheral portion of said frame (4,5) around said door opening inner edge (14,15) and a peripheral portion of said cover ring around said ring opening inner edge; • wherein said door assembly further comprises at least a blocking element located on said door cover and/or on said frame (4,5) and/or on said cover ring in order to minimize relative movements of said door cover with respect to said frame (4,5) and/or said cover ring, characterized in that said blocking element includes a snap-fitting connection apt to block said door cover in correspondence of said outer edge with respect to said cover ring and/or to said frame, and in that said blocking element is located • on said portion of said door cover outer edge interposed between said frame (4,5) and said cover ring; and/or • on said peripheral portion of said frame (4,5) around said door opening inner edge (14,15); and/or • on said peripheral portion of said cover ring around said ring opening inner edge. • a casing containing a treatment chamber for receiving a load to be treated, said casing including an aperture for accessing said treatment chamber; • a door assembly associated to said casing for opening and closing said aperture, said door assembly comprising: ∘ a door frame (4,5) having a door opening (4a,5a) defining a door opening inner edge (14,15); ∘ a cover ring having a ring opening defining a cover ring inner edge, said cover ring being attached to said door frame (4,5) in such a way that said ring opening substantially corresponds to said door opening (4a,5a); ∘ a door cover closing said door opening (4a,5a) and said ring opening, said door cover having an outer edge, wherein a portion of said door cover outer edge is interposed between a peripheral portion of said frame (4,5) around said door opening inner edge (14,15) and a peripheral portion of said cover ring around said ring opening inner edge; ∘ a door frame (4,5) having a door opening (4a,5a) defining a door opening inner edge (14,15); ∘ a cover ring having a ring opening defining a cover ring inner edge, said cover ring being attached to said door frame (4,5) in such a way that said ring opening substantially corresponds to said door opening (4a,5a); ∘ a door cover closing said door opening (4a,5a) and said ring opening, said door cover having an outer edge, wherein a portion of said door cover outer edge is interposed between a peripheral portion of said frame (4,5) around said door opening inner edge (14,15) and a peripheral portion of said cover ring around said ring opening inner edge; • wherein said door assembly further comprises at least a blocking element located on said door cover and/or on said frame (4,5) and/or on said cover ring in order to minimize relative movements of said door cover with respect to said frame (4,5) and/or said cover ring, characterized in that said blocking element includes a snap-fitting connection apt to block said door cover in correspondence of said outer edge with respect to said cover ring and/or to said frame, and in that said blocking element is located • on said portion of said door cover outer edge interposed between said frame (4,5) and said cover ring; and/or • on said peripheral portion of said frame (4,5) around said door opening inner edge (14,15); and/or • on said peripheral portion of said cover ring around said ring opening inner edge.