Solid Wood, Perspex Panel, the Table or the Wall.Protective Film Must Be Removed. Use 1,With mat, Front opening 3.8×3.8 in with mat,Suitable for photos 4×4 in. Use 2, Without mat,Front opening windows 5.6×5.6 in without mat， front opening 5.98×5.98 in, Suitable for photos 6×6 in.
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