Poster Clip Frame 30&rdquo; x 40&rdquo; Black Matte Finish Aluminum Metal Sign Holder &ndash; Snap Open Display for Quick Signage Changes Concealed mounting holes and all the necessary hardware included. Hinge edges snap open and closed for fast sign changes. Designed for 30" x 40" images. Overlay prevents glare and protects images. Displays2go SKU#: QCBLK3040