The invention relates to a telescopic cupboard drawer, especially for tall cupboards, comprising an outer base rail that can be fixed in the tall cupboard on the base of the cupboard body, a middle differential rail that slides in said base rail and a top support rail that slides in said middle rail and accommodates the cupboard drawer. These rails slide against each other in a guided manner with the interposition of runners and are limited in their sliding movement by stops in the pulled-out and pushed-in positions. A wedged strip that is fixed under the support rail and is supported on the runners of the differential rail raises the support rail in relation to the differential rail when the drawer is pulled out in order to balance the weight of the cupboard drawer.
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