Quality Park No. 10 Single Window Security Tinted Business Envelopes with a Self-Seal Closure

Single Window - #10 - 4 1/8" Width x 9 1/2" Length - 24 lb - Self-sealing - White - Wove - 500 / Box. Left-side window eliminates the need to address the envelope separately to save time and effort; positioned to fit most invoice address layouts. Protects sensitive client information with reflex blue tint pattern that makes it impossible to see the details of the contents even when held up to light.