An installation for lift comprising: - a guide assembly of a cabin assembly and a counterweight assembly, said guide assembly comprising two profile elements , each profile element extending longitudinally along a direction normal to the planes of the profile of said profile element, wherein said profile element is one piece, said profile element has a longitudinally extending planar face , and said profile defines: - at least one means for fastening to a wall panel, such that the profile element rests against this all section by this planar face, - first guide means (23; 23') extending longitudinally over the entire height of said profile element, and shaped for guiding along the longitudinal direction of the cabin assembly, - second guide means (24; 24') extending longitudinally over the entire height of said profile element, and shaped for guiding along the longitudinal direction of the counterweight assembly; - a cabin assembly comprising a cabin and at least one guide means , secured to said cabin and capable of cooperating with the first guide means of the profile element of the guide assembly, characterized in that the installation for lift further comprises: - at least one spacer element and securing means (29; 29') defined by said profile to secure the spacer element by the two ends thereof to the two respective profile elements; and, - each profile element is made entirely of a material comprising at least 50% by mass of aluminium. - a guide assembly of a cabin assembly and a counterweight assembly, said guide assembly comprising two profile elements , each profile element extending longitudinally along a direction normal to the planes of the profile of said profile element, wherein said profile element is one piece, said profile element has a longitudinally extending planar face , and said profile defines: - at least one means for fastening to a wall panel, such that the profile element rests against this all section by this planar face, - first guide means (23; 23') extending longitudinally over the entire height of said profile element, and shaped for guiding along the longitudinal direction of the cabin assembly, - second guide means (24; 24') extending longitudinally over the entire height of said profile element, and shaped for guiding along the longitudinal direction of the counterweight assembly; - a cabin assembly comprising a cabin and at least one guide means , secured to said cabin and capable of cooperating with the first guide means of the profile element of the guide assembly, characterized in that the installation for lift further comprises: - at least one spacer element and securing means (29; 29') defined by said profile to secure the spacer element by the two ends thereof to the two respective profile elements; and, - each profile element is made entirely of a material comprising at least 50% by mass of aluminium. - at least one means for fastening to a wall panel, such that the profile element rests against this all section by this planar face, - first guide means (23; 23') extending longitudinally over the entire height of said profile element, and shaped for guiding along the longitudinal direction of the cabin assembly, - second guide means (24; 24') extending longitudinally over the entire height of said profile element, and shaped for guiding along the longitudinal direction of the counterweight assembly; - a cabin assembly comprising a cabin and at least one guide means , secured to said cabin and capable of cooperating with the first guide means of the profile element of the guide assembly, - at least one spacer element and securing means (29; 29') defined by said profile to secure the spacer element by the two ends thereof to the two respective profile elements; and, - each profile element is made entirely of a material comprising at least 50% by mass of aluminium. <EOS>