Up and over door in insulated sections - has hinge and sealed joint between sections with unequal length lips at top edges of panels

摘要

The door is made from several sandwich type panels (2) each having a core of insulating material held between thin front and back metal sheets and each having channel section end caps (6,25). The top of the sheets are returned inwards and upwards forming two unequal length parallel lips housing flexible tongues fitted to the base of the panel above. The unequal length of the lips allows the panels to rotate without the tongue springing clear of its housing. Hinges (4) are fixed directly to the panels and the end caps have housings (26) for button projections to ride in the guide channels (8).