No. 9 Flip-Stik® Self-Sealing DG-2 Window Envelopes w Crosshatch Blue Inside Security Tint, 3-7/8" x 8-7/8", White Sulphite Side Seam 24-lb, Vellum Finish (SFI Certified) - Box of 500 Envelopes

No. 9 Flip-Stik® Self-Sealing DG-2 Window Envelopes w Crosshatch Blue Inside Security Tint, 3-7/8" x 8-7/8" Poly Windows - UPPER: 7/8" x 3-1/2", 3/8" Left, 2-1/2" Bottom - LOWER: 1" x 3-1/2", 7/8" Left, 11/16" Bottom White Sulphite 24-lb Paper with Vellum Finish (SFI Certified) Two Side Seams Under, Flip-Stik® Self Seal, Boxed with Twin Flaps Down, 500 Envelopes Quality Mailing Products from Linton Mailing Supplies®