New, unused, and unopened storage bag for mosquito screens x 1. The size is extra-large: 2.70m (height) x 1.70m (width). Originally, this bag is for storing mosquito screens during the off-season, but its large size allows it to be used for storing various items. One bag can store 2-4 mosquito screens. The thickness is 0.05, which is considerably thicker than commercially available plastic bags, making it durable enough to be used as a substitute for a blue sheet for rain protection. It comes with tape that is useful for storage. The number "30" refers to the number of bags when purchased in a box. This is a single bag (1 piece) for sale.