Atmospheric resistant doors

A door comprising a pair of plates and a one-piece, integral, continuous, relatively thin walled stile and rail collar of a generally rectangular exterior outline, said collar being of an inwardly opening generally U-shaped cross-sectional configuration, said collar being defined by a bight and opposite spaced generally parallel faces, each face and bight having interior and exterior surfaces collectively imparting said generally thin walled and U-shaped cross-sectional configuration to said collar, said entire collar including said bight and faces between said interior and exterior surfaces thereof being constructed from an admixture of unfoamed polymeric resin and reinforcing material resistant to corrosive and/or high humidity environments, said exterior surfaces of said bight and faces being devoid of exteriorly exposed reinforcing material, said stile and rail collar being completely cured prior to the securement of said plates thereto whereby warping is prevented, each of said plates being of a generally rectangular outline defined by inner and outer surfaces and a peripheral surface therebetween corresponding in size and shape to the rectangular exterior outline of said collar, each of said plates being constructed from an admixture of polymeric resin and reinforcing materials resistant to corrosive and/or high humidity environments, each plate outer surface being devoid of exteriorly exposed reinforcing material, polymeric resin material sandwiched between each plate inner surface and the exterior surface of an associated one of said collar faces for adhesively bonding said plates to said collar faces exterior surfaces, said polymeric resin bonding material being resistant to corrosive and/or high humidity environments, and each said plate peripheral surface being defined by terminal edges of each plate disposed generally flush with said collar bight exterior surface.