6-1/2 inch high gussets reinforced at top with rollover Tyvekå¨ strip. Back of pocket lined with manila for added strength and easy identification of subject heading. Fold-down front for easy access to contents. Bottom and sides fully enclosed. Recycled, contains 10% post-consumer material with Redrope Gussets. Straight Cut Tabs. Letter Size. 5-1/4 inch Expansion. 50 per Box.