The Office Depot #10 Security Clean Seal Windowless 250 Envelopes are a solid style envelope without windows, featuring a brand by Office Depot. These envelopes are made in the United States and come in a quantity of 250 each. With a model size of 4 1/8 x 9 1/2, these envelopes are perfect for business and industrial use in packing and shipping materials. The clean seal design ensures secure and confidential delivery of important documents and letters.