M&T Displays Anti Glare Plastic PET Cover Sheet UV Resistant Replacement for 24x36 Inch Swingpro and Windpro with One-Side Protective Film (3 pack) - Walmart.com
Non-Glare Plexiglass Sheets for Picture Frames
Amazon.com - Aluminum Snap Frames, Pack of 5 Front Loading Pictures Frames, 11" x 17", Black Finish, With Non-Glare PVC Covers And Sturdy Plastic Backings