Product Features ASSEMBLY IS REQUIRED. These side loading frames assemble quickly with no tools required. Exclusive Quadro P375 picture frame molding system offers exceptional value with perfect corner miters and Gallery results! Moldings are extruded ABS plastic with a metallized foil finish Sizing Details (using a 16×20″ as an EXAMPLE): Nominal Size (listed size) is the size of the panels which corresponds to the media being frame. A 16×20″ frame will accommodate a 16×20″ print. Effective display area is nominal size minus 3/4″ due to the molding overlap. A 16×20″ frame has a visible opening of 15.25 x 19.25″. Maximum media thickness of 3/16″ will accommodate a standard bevel cut matte.The frames hang from 2 corner clips NOT from a central hanger….. What’s Included All materials required to make a fully functional picture frame.Four (4) Moldings. Four (4) Corner Clips for assembly, hanging and leveling. A smooth MDF (Medium Density Fiberboard) backing panel Front Glazing Panel Options: 1mm. thick Optically clear PET plastic panel with protective peel-away film on both surfaces.1mm. thick Anti-Glare PET plastic panel with protective peel-away film.2 mm. thick Float Glass panel. Instructions & Product Video Assembly Video – http://www.youtube.com/watch?v=1w8Ygo-RxvkFrame Hanging Video – https://www.youtube.com/watch?v=OUFgWEJWTssDis-Assembly Video – http://www.youtube.com/watch?v=GdYonuai438