Image 1 of 3 Image 2 of 3 Image 3 of 3 Be A Square Poster $11.89 8X12" Our heavier-weight, white, premium matte paper has a natural, smooth uncoated finish that feels luxurious to the touch. Quantity: Add To Cart Added! 8X12" Our heavier-weight, white, premium matte paper has a natural, smooth uncoated finish that feels luxurious to the touch.