Abstract: An overhead, rolling door includes a peripheral seal construction that restricts air flow heat transfer through the periphery of a door opening. The door comprises a flexible curtain mounted on an overhead drum located above the door opening. The curtain may be unwound from the drum and lowered to close the door opening and engages the seal to preclude air flow energy loss through the door opening. The seal is comprised of unitary, elastomeric, elongate, flexible blades mounted on brackets positioned around the periphery of the door opening. The blades function as flexible cantilever mounted seals with an outer end that fits tightly against the surface of the closed door to form an uninterrupted seal of the closed door opening.