Glue Up Application for Easy DIY Can be painted with most water based interior paints Made in Europe from High Grade Polystyrene Foam Light Weight Moisture & Humid Resistant Decorative Foam Ceiling Planks. Each plank is 39"x6.5" and about 1/4" thick. Designed for easy glue up application and providing beautiful, clean, and modern alternative to your ordinary plain ceiling. Planks are available in several colors ranging from a very modern & industrial concrete look, wood grain finishes and plain white.