The Vestil Dock Shelter reduces oversized doors to match a truck opening. The long-wear Vestex V-42 fabric is highly resistant to abrasion and tearing. Fiberglass staves are sewn into the flaps. Seal is formed along the sides and top of trailer when the vertical and top panels are pushed inward by the trailer. When installed the shelter will close door opening down to 90in.W x 90in.H opening (between flaps). Available in 18in., 24in., 30in. or 36in. projection models.