... . 2.black, silver, gold or etc for frame colour. 3. snap function change poster light box1.8mm,15mm, 28mm and 40mm ... .2.black, silver, gold or etc for frame colour.3. snap function change poster 1.Aluminum frame which thickness at 8mm ... black, silver, gold and any other color you wan.4. Snap function, 4 side frame can open and close that change ...