Poly-klear business card window open-side envelopes

Poly-klear business card window open-side envelopes Poly-Klear® Business Card Window Open-Side Envelopes, #10, White, Gummed, 100/Bx Open-side construction allows for easier document insertion and retrieval. Unique Poly-Klear® pocket allows you to insert a standard-sized business card as the return address. Extra large window can be used for many customized applications.