Clear Plastic Sleeves for 16x20 Mats (25 pack) - Global Image

16x20 Clear Cello Bags W/ Resealable Flap

Mat Board 16x20 at Jerry's Artarama

12x16 Collage Wood Photo Frame 13-Opening Picture with White Mat Black

Protective Poly Sleeves - Adhesive Closure - 20 x 26, 25-pack [RPA20X26]

Smoke, 16x20 Size, Double Matted, Backed, Clear Plastic Sleeve, Frame Ready, Limted Edition, Hand Signed, Fierce Dragon, Dragon Portrait - Sweden

Our Acid-Free matboards are 4-ply and feature a White Core. With an overall size of 8 inch x 10 inch, these mats fit perfectly into 8 inch x 10 inch frames. Each mat is bevel cut to enhance your 6 inch x 8 inch photos. The actual mat opening size is 5.5 inch x 7.5 inch inches so that it may safely and securely display your 6 inch x 8 inch photo, artwork, needlepoint, sign, etc.

CustomPictureFrames.com Vibrant Yellow Acid Free 16x20 Picture Frame Mats with White Core Bevel Cut for 12x18 Pictures - Fits 16x20 Frame - Pack of 25

CustomPictureFrames.com Ash Suede Acid Free 22x28 Picture Frame Mats with White Core Bevel Cut for

13x19 Mat for 18x24 Frame - Precut Mat Board Acid-Free Show Kit with Backing Board, and Clear Bags Dill Green 13x19 Photo Matte Made to Fit a 18x24 Picture Frame Matboard for

Golden State Art, Pack of 50 Acid-Free Crystal Clear Sleeves Storage Bags for Framing Mats Mattes (8 3/8 x 10 1/8 inches) 8x10