Business Source No. 10 Double-Window Invoice Envelopes Double Window – #10 – 9 1/2″ Width x 4 1/8″ Length – 24 lb – Gummed – White – Wove – 500 / Box (BSN36694)

No. 10 business envelopes feature double windows and a security tint to secure your documents. Top window is 1″ x 3″ , 1/2″ from the left side and 2-1/2″ from the bottom. Bottom window is 1-1/8″ x 4″ , 1/2″ from the left, and 3/4″ from the bottom. Design also features a white wove material, side seam and gummed seal. 24 lb.