LUXPaper Double Window Invoice Envelopes w/Peel & Press, 4 1/8 x 9 1/8, Pool Blue, 500 Pack

LUXPaper Double Window Envelopes Size: 4 1/8 x 9 1/8 inches Pool Blue Quantity: 500 Pack These envelopes are perfect for all your mailing needs, especially ones that require windows.