To make an enclosed structure, a back panel is needed to enclose that side of a valance canopy. Our valance canopies can come as valance and enclosed canopies with a five piece kit to fully enclose the structure, or individual valance canopy tarps can be sold separately. In the case of valance canopy back door pieces, the back panels are polyethylene and fit an A-frame or peaked roof structure. These panels run parallel to the front doors of an enclosed valance canopy and can be rolled up for warmer weather, but this side of the valance canopy is not an entrance for your vehicles. Like our valance canopy doors, the valance canopy back panels come in ten, twelve, and twenty foot sizes.