- Crystal clear viewing of 12x18 documents such as posters or art
- Keep your art, posters, or other memorabilia clean and safe
- Pack of 10 12x18 poster size document holders per box
- 15 mil thickness means better protection than other Sentry holders on the market
- Opens on Short Side
Protective sleeve Sentry holders are essential items when collecting photos, artowork, posters and prints. Sold in packs of 10, 12x18 Guardhouse Sentry holders are 15 mil thick and have an interior dimension of 12 1/8 x 18 1/8 and an exterior dimension of 12 1/2 x 18 3/8 inches. Guardhouse Sentry holders are made of non-plasticized rigid vinyl and are designed to keep your collectibles unharmed during long-term storage, at the same time as offering great visibility of your collectible items.