#10 Envelopes Flip And Seal- Security Tinted Self Seal Envelopes-4 1/8" x 9 &frac12;- 55 Pck (55 Pack) #10 Blank Regular Flip & Stick Security Tinted envelopes These are standard 24 lb. white stock with a self-seal flap and measures 4 1/8" x 9 . Seal the envelopes with no extra waste These envelopes are secured with the inside tint so no more worries when sending confidential information No moisture is required to seal 55 Pack