Plywood Ceiling Liner Kit 14+ Transit 148" Wb Med RoofNeed to protect your van from dents or divots from the inside? What about adding installation? What to increase your tool mounting space? Westcan Manufacturing has designed vehicle specific plywood liners manufactured from 3 16 plywood. Our plywood liners are designed to easily mount to existing supports within your cargo van. When properly installed, a plywood liner will give you increased mounting options for hooks and hangers, to name a few.