Postcard & Photo Protective Sleeve Toploader - 6" x 4" - Pack of 25 Protective sleeve toploaders are essential items when collecting and saving postcards or photos. Sold in packs of 25, these Guardhouse toploaders for postcards or photos are 12 mil thick and measure 4 1/8 x 6 1/8 inside, while the outside measures 4 1/4 x 6 5/16 inches. Guardhouse toploaders are made of non-plasticized rigid vinyl and are designed to keep photos and cards unharmed during long-term storage, at the same time as offering the collector great visibility of their collectible items. These sleeve toploaders have the opening on the 6 inch side.