Columbian CO138 (#10) 4-1/8x9-1/2-Inch Inkjet/Laser White Envelopes, 100 Count Envelope is specially designed to be used in both inkjet and laser printers. Premium 24lb stock minimizes smearing from inkjet printers. Heat resistant adhesive seal minimizes tacking from laser printers. Executive Style diagonal seam V-flap construction. Moisture activated gummed seal. (#10) 4-1/8" x 9-1/2" 100 envelopes Executive Style diagonal seam V-flap construction. Moisture activated gummed seal. (#10) 4-1/8 x 9-1/2 Inches 100 envelopes Envelope is specially designed to be used in both inkjet and laser printers. (#10) 4-1/8 x 9-1/2 Inches. 100 envelopes Premium 24lb stock minimizes smearing from inkjet printers. Heat resistant adhesive seal minimizes tacking from laser printers.