One size can fit several different household items with this Pen + Gear Universal Packing Box (sold with one protective bubble roll and 4 foam corners). This box is ideal for moving or storing large items like flat screen televisions mirrors framed wall art pieces and more. Use the protective bubble roll and 4 foam corners (included) to protect your television or art from scratches dust and other damages during a move or when in storage. This box is easy to assemble and is adjustable to fit many different sized items. When fully nested the box measures 29? x 6? x 37? on the small side and can be adjusted larger up to 58? x 6? x 37? for larger items. This box is equipped with hand holes for easy carrying and boasts a built-in tabbed locking mechanism to secure the 2 sides of the box together. The box comes as two separate pieces that slide together over the opposite ends of the television framed art piece or mirror. Assembly instructions are included on the box.