Double-sided Write-on Blackboard, 21-1/2 x 30-1/4 x 18-1/2-Inch, A-Frame Style, Use With Chalk, Liquid Chalk And Wet-erase Pens Double-sided blackboard enables advertising from 2 different directions. Matted textured blackboard can be used with stick chalk, liquid chalk and wet-erase pens. Hinged black wood frame closes flat for easy transportation. Peg feet protect the base from damage. Displays2go SKU#: AF1828BK1ES