"The world's only one-piece 'flapper-style' traffic door. Made from panels of light gray PVC material 1/4in. thick with 15in.W x 18in.H welded in RF window. U.S.A. Color Light Gray, Window Dimensions in. 15 x 18, Material PVC, Material Thickness in. 1/4, Dimensions W x H ft. 4 x 7. Top mounted corrosion-resistant gravity hinge"
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