10' x 12' gazebo winter cover by outdoor casual - protects 10'x12' gazebos including sambra, concord and edison gazebos (144" l x 120" w x 120" h) outdoor casual this dark brown gazebo winter cover is designed to protect your investment and prolong its use. this cover will protect your unit from the harsh winter elements, extending its longevity.. the zippered door allows for easy interior access and the windows allow for natural light if you want to continue to use the structure during the winter months. this unit will block most wind and we also offer winter support poles for enhanced structural support and additional safety should you want to continue to use your gazebo during the winter months.