inside surface of the cover may be removable to expose a non mesh screen or a mesh screen layer to provide ventilation and or sunlight to the inside of the tent the removable portion a panel may be secured to the inside surface of the cover by zippers hook and loop fastening means snap lock means or other means used in the art the panel may be removed to expose the screen or mesh layer that is already in place spanning the orifice exposed by the removing the cover or the screen or mesh layer may be in a stored non extended position that is then extended to cover the open orifice once the panel has been removed when the screen or mesh layer is extended to cover the open orifice it may be secured to the orifice 39 s surrounding edge by a zipper means by a hook and loop fastening means by snap lock means or by other means used in the art the screen or mesh layer may be stored in a non extended position by having straps securing the screen or mesh layer in a rolled configuration the rolled configuration may be located adjacent to the orifice that the screen or mesh layer will cover once the panel is removed or may be located in any other location on the inside or outside surface of the cover or walls there may be more than one removable panel located throughout the cover 39 s interior surface and the panels may be of varying sizes and shapes such as but not limited to square rectangular circular ovular etc the panel may have one end still secured to the cover such that.