Add on a door to your pup's favorite dog house. This clear plastic flap is easy to install and easy to clean. The flap can be used to keep out harsh weather like snow rain and sleet. The flap will hold in cool air in the summer and warm air in the winter. Size: 17.25" x 11.75" x 2". Easy to install and clean. Accessory for Cozy Cottage dog house [#43025-101].