Create professional-looking invitations, announcements, reminders, seasonal offers and more. Sturdy bright white cardstock is either matte-coated for vivid graphics and sharp text or has a premium quality glossy finish ideal for photos. Ultra-fine perforations let you separate cards cleanly and easily. Meets U.S. postal regulations for postcards. Easy to customize with free templates and designs using Avery Design & Print Online. 8.5" x 11" sheets. For Laser Printers. Paper Color(s): Matte White; Card Height: 4.25"; Card Width: 5.5"; Cards Per Sheet: 4.