High load retention system for sectional overhead doors

A high load retention system for a sectional overhead door, the system comprising:

• a plurality of primary door panels, each comprising a front face;
• a primary track;
• a plurality of engagement elements, each engagement element comprising a first end connected to a primary door panel of the plurality of primary door panels and a second end that rides in the primary track;
• a high load jamb retaining element positioned adjacent to the primary track and comprising a clasping portion, wherein the high load jamb retaining element is L-shaped and comprises mutually perpendicular first and second portions, the first portion is perpendicular to the front face of a primary door panel of the plurality of primary door panels and defining the clasping portion of the high load jamb retaining element, and the second portion is parallel to the front face of the primary door panel of the plurality of primary door panels and configured to be connected to a door jamb;
• and
• a high load door retaining element connected to the primary door panel of the plurality of primary door panels and comprising a clasping portion corresponding to the clasping portion of the high load jamb retaining element;
• wherein in the absence of a load pressing against the front face of the primary door panel of the plurality of primary door panels, the clasping portion of the high load jamb retaining element and the clasping portion of the high load door retaining element do not overlap along a direction normal to the front face of the primary door panel of the plurality of primary door panels, and the primary door panel of the plurality of primary door panels is configured to move inward and clear of the high load jamb retaining element;
• and
• wherein under a load pressing against the front face of the primary door panel of the plurality of primary door panels, the clasping portion of the high load jamb retaining element and the clasping portion of the high load door retaining element engage with each other in response to the load, causing a bending of the front face of the primary door panel of the plurality of primary door panels and a resulting movement of the clasping portion of the high load door retaining element toward the clasping portion of the high load jamb retaining element.