These Intercept Shield boxes are specially made to hold the 2X2 Intercept Shield holders. Each box is constructed of acid-free and sulfur-free high grade materials and lined with Intercept Shield. This handsome box will hold one hundred 2X2 Intercept Holders (2X2 Holders are sold separately). Dimensions are 15" by 5-3/8" by 2-1/4". Intercept Shield acts as a neutralizing agent cleansing the air around the coin protecting it from the harmful effects of corrosion.