A-Frame Chalkboard Sidewalk Sign with Slide-out 18" x 26" Blackboards, for Wet Erase and Traditional Stick Chalk - Teak-Colored Wood Framing Use with traditional stick chalk, liquid chalk and wet-erase neon pens. Two, slide-in 18 x 26-inch boards allows you to design messages prior to them being displayed. Folds flat for easy transportation and storage. Double-sided enables advertising from multiple directions. Displays2go SKU#: AF1826RTEES