#10 Regular Envelope - Astrobright - 24# Galaxy Gold (4 1/8 x 9 1/2) - Business Color Series (Box of 250) A Quantity of 250 - #10 Astrobright Galaxy Gold Envelope Made with 24# Astrobright Galaxy Gold Paper. FSC Certified. - Standard Gummed Flap. Great for mailing letters, invoices, statements, brochures, or announcements. This envelope may be sourced from any one of a number of top brands. Ships via UPS Ground