Patent ID: 8327805

Claim:
Animal husbandry tunnel doors with adjoining extrusions for closing tunnel ventilation openings typically in broiler houses, comprising: a. first and second adjacent tunnel doors, each with opposing faces with top, bottom and side edges, the faces sandwiching an insulation layer wherein the insulation layer is foam; b. first door top, bottom and side edge extrusions each having parallel rigid inner prongs each with a barb thereon and adjacent parallel outer flanges, the parallel inner prongs and outer flanges forming two slots therebetween for receiving the top, bottom and side edges of the opposing door faces of the first adjacent tunnel door and the edges of the top, bottom and one side of the second adjacent tunnel door as the inner prongs pass into the insulation and are held thereat; and c. second door side edge extrusion having parallel inner rigid prongs each with a barb thereon and adjacent parallel outer flanges, the parallel inner prongs and outer flanges forming two slots therebetween for receiving the other side edges of door faces of the second adjacent tunnel door as the inner prongs pass into the insulation and are held thereat, and second opposing parallel skirt flanges each with an inward distal barb, each flange flexibly adapted to impinge upon, slide over, securely capture and hold the outer flanges of one of the first extrusions of the first adjacent tunnel door.