A system of two door panels is defined with the panels arranged one above the other, each with independent horizontal movement operation. Each door panel is provided with a support and guide system that allows each to be moved horizontally into and away from an enclosure opening. The construction of the doors and supports enables attachment and operation on small lightweight vehicles in the nature of golf carts and similar vehicles. The construction details enable the panels to be secured onto to integrated into small light weight personal vehicles such as golf-carts and similar vehicles without substantially altering the vehicle's performance and operation.