Amazon.com: BOX USA 10 Pack of Artwork/Mirror Corrugated Cardboard Boxes, 37 5/16" L x 4 1/16" W x 31" H, Kraft, Shipping, Packing and Moving : Industrial & Scientific
Amazon.com: Uboxes 5 Mirror & Picture Boxes for Pictures up To 30"X40" : Tools & Home Improvement
48 X 10 X 48 DW Picture Mirror Carton | Boxes4U
Decorative mirror cardboard 280 g/m2, gold
Large Art & Mirror Box - 80″ x 9″ x 42″ | Gallery Art Box | NYC - Packing R Us