#10 Single Window Envelope - Tinted - 24# White (4 1/8 x 9 1/2) - Business Window Series (OSSS) (Box of 250) A Quantity of 250 - #10 Window Envelope 24# WW (OSSS) 24# White Wove Paper - Regular Gummed Flap Outside Side Seam Construction provides a full back flap without any seams. Perfect for printing on the back of the envelope This envelope may be sourced from any one of a number of top brands. Ships via UPS Ground