Recyclable plastic man-door

A method of manufacturing a polyethylene plastic door comprising:

• heating a first plurality of polyethylene plastic pellets and polymer additives;
• extruding a heated mixture of polyethylene plastic pellets and polymer additives to form a first plastic sheet comprising first and second substantially planar surfaces and a second plastic sheet comprising third and fourth substantially planar surfaces;
• removing from the first substantially planar surface of the first plastic sheet a first plurality of cut-outs;
• removing from the third substantially planar surface of the second plastic sheet a second plurality of cut-outs, wherein the second plurality of cut-outs mirrors the first plurality of cut-outs;
• forming a door by attaching the first substantially planar surface of the first plastic the cavity formed by the first plurality of cut-outs and the second plurality of cut-outs form a cavity which is within an interior of the door and the second substantially planar surface of the first plastic sheet and the fourth substantially planar surface of the second plastic sheet form an exterior surface of the door;
• and
• recycling a material removed from at least one of the first plurality of cut-outs and the second plurality of cut-outs.