Quality Park™ Window Postage Saving Envelope, 28lb, 6 x 9 1/2, White, 500/Pack

Cut back on costs at the post office. Durably built catalog envelopes are made to accommodate heavier items through the side opening, whether that be thick paper or multi-item packets. With a special tint and gummed flaps, they’re easy to stuff and sort while saving every penny possible.