Tackle big mailing projects with this box of 500 Quality Park gummed white #10 business envelopes. Mail documents confidently by using these gummed business envelopes. With a modern side seam and bright white stock construction, these envelopes provide a sleek and professional appearance, while the fully gummed flap closure ensures a strong, secure seal. These Quality Park white #10 business envelopes are sold in a box of 500, so you can quickly stock up any office. US #10 business envelopes are suitable for all your mailing needs. Made from white 24 lb. paper for durability. These envelopes measure 4 1/8""H x 9 1/2""L in size, providing enough space for your mail. Gummed closure with commercial flap keeps contents in place. Convenient box of 500 envelopes ensures ample supply. The flap is on the long side for easier filling. Sold as 500/Box.