Query: mat for 6 x 6 frame
ZETYC 8x8 Picture Frame - Made to Display Pictures 6x6 (with Mat) Or 4x4(with Mat) Or 8x8(Without Mat) (8" x 8", White)
Golden State Art, 6x6 Black Photo Square Wood Frame, For Smartphone Instagram Pictures, Wall Decoration. Includes a White Mat for 4x4 Photo & Real Glass
8x8 Picture Frames Black Display Picture Frame 6x6 Solid Wood with Mat Wooden Square Photo Frame for Wall Hanging or Table Top Home Decoration-8x8 Black
MCS 12x12 Inch East Village Collage Frame with 6x6 Inch Mat Opening, Black (65592)