Abstract: A sectional upward-acting door, particularly adapted for use with mobile cargo containers and the like includes extruded door panels or sections which are hingedly connected to each other by hook-like hinge members integrally formed along a top edge of one section and an arcuate channel defined by a bottom wall and an integral pintle on an adjacent section. An elastomer seal and bearing member fits within the channel formed along the bottom edge of a section for engaging the hinge member and for aiding in forming a weather and light seal at the hinge joint between sections. The sections are laterally assembled by engagement of the hook-like hinge member in the channel of an adjacent section and are retained in assembly by a releasable retainer and seal member which may be formed as a co-extruded dual durometer part. Door side edge seals are insertable in a space formed between door side edge guide tracks and an inner surface of a rear wall of the cargo container.