A-Frame Signicade Sandwich Board with Two 24"x36" Write-On Boards, Works with Wet Erase Markers, Double Sided, White Legs can hold sand to weigh unit down. Product size:24.5''x45''x3'' (w/Dry Erase size :24''x36''x0.02'') Double sided to display 24"w x 36"h messages at any time. Glossy white plastic writing surface is designed for use with wet-erase or liquid chalk markers. Folds for storage and portability.