Upgrade your business correspondence with our poly window envelopes. Designed for efficiency and professionalism, these envelopes are perfect for sending invoices, statements, and other important documents. The flip and seal closure ensures a secure and hassle-free sealing process, while the poly window allows for easy address visibility.✔ 1 spot color: black, red, or reflex blue; flat print✔ Size: #10 (4 1/8" x 9 1/2")✔ Bleeds are not available✔ Flip and seal closure✔ White wove 24 lb. stockExperience the smooth texture and reliable quality of our envelopes. Customize your order today with our advanced tools and benefit from fast turnaround times.