Great Papers! Silver Foil-Lined White #10 Foil Envelope, 25 count, 9.5" x 4.125" (964903) Go to amazon.com Related posts Top 13 best interoffice mail envelopes for 2022 Feature25 #10 envelopes9.5 inches x 4.125 inchesgummed adhesiveWhite envelope with silver foil lining DescriptionFoil-lined white envelopes with Gummed adhesive to mail your holiday invitations, announcements, and personal messages.