At ClearBags, our wholesale Crescent mat boards are top notch. See our 11" x 14" single mat boards, double thick, white, with a white core and 8 x 10 cut.
24x24 Custom Premium Matboard
11x14 Frame for 8x10 Picture White Wood, Smooth Finish (10 Pcs per Box)
You will get two Double picture mats cut for 8x10 pictures. They will fit into any 11x14 frames The opening is cut to 7.5 x 9.5 to overlap a 8x10
Pack of (5) 11x14 Double Acid Free White Core Picture Mats Cut for 8x10 Pictures in White and Silver
The opening size is 10.5x13.5 for 11x14 print. The mats are beveled cut with white core and 4-ply thick (about 1.4 mm or 1/16 inch). The re-sealable adhesive strip of the clear bag is below the opening of the bag instead of on the flap.
Golden State Art Pack of 10 11x14 Double Picture Mats with White Core Bevel Cut for 8x10 Pictures Backing Bags Black Over
Foam Core Board Mounting, Photo Print Mounting
Blick White Core Pre-Cut Mats
Crescent Perfect Mount Self-Adhesive Mounting Board
ClearBags Gallery Board (Double Thick) Mats
11 x 14 Single Mat Double Thick White/White Core 7 5/8 x 9 5/8 Inner Cut 10 pack MT20002
Golden State Art, Pack of 10, 11x14 for 8x10 Color Picture Photo Mat -White- core, Acid-Free - Great for Frames, Artwork, Prints, Pictures, White
The METRO Seamless white wood Matted 11x14/8x10 frame by Framatic® - Picture Frames, Photo Albums, Personalized and Engraved Digital Photo Gifts - SendAFrame