Protective sleeve toploaders are essential items when collecting and saving posters or photos. Sold individually, Guardhouse 24x30 toploaders are 12 mil thick and measure 24 1/8x 30 1/8 inside, while the outside measures 24 5/8 x 30 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.