Protective sleeve toploaders are essential items when collecting and saving posters or photos. Sold individually, Guardhouse 22x28 toploaders are 12 mil thick and measure 22 x 28 inside, while the outside measures 22 1/2 x 28 1/4 inches. Guardhouse toploaders are made of non-plasticized rigid vinyl and are designed to keep posters and photos unharmed during long-term storage, at the same time as offering the collector great visibility of their collectible items.