Free. Magnetic storm windows used on older Anderson windows. They are plexiglass with magnetic metal frame around the window itself with the metal frame that goes around the fixed window of the building. Three different sizes: two that are 36 3/8" X 16 3/4" (also has 2 screens), three that measure 36 3/4" X 21 1/8" (with 2 screens) and four that measure 49" X 21" (includes 2 screens). We are updating our windows and no longer need these. First come, First serve. I will not hold these. Located at 122 Estevan Dr. On the westside of the garage. When I see they are gone, I will take down the ad. First come, first serve. Thanks much.