RockBridge is our composite option made from treated wood fiber, phenolic resins, zinc borate and a water repellent. It is 90% wood, yet resists moisture, rot, and termites. This is the ideal choice if you are looking for a long-term shutter option. RockBridge Composite does not have any wood grain or wood features and therefore is intended to be painted. This product is recommended for fixed mounting to your house and comes with poly fixed mount brackets. We do not recommend as a functional shutter. Due to the longevity and affordability of RockBridge Composite, it is one of our most popular shutter products.