OEM Quality Park Redi Strip expansion envelopes provide security for bulky mailings with a 2" expansion gusset designed for extra-thick mailings. These envelopes are ideal for computer reports, catalogs, and binders. The large end-opening allows for easy document insertion, while the convenient Redi-Strip closure requires no moisture to seal; simply peel away the liner and seal. Made from durable 40 lb. Kraft material, these envelopes ensure reliable protection for your important documents.