Features Product data Material Form Colors If you require high stability and durability you should choose a roof box that is made of glass fiber. In the following we have listed some essential differences between roof boxes made of plastic and made of glass fiber: Glass fiber Plastic + stabile and nonbending + easier to manufacture + better surface and finish - more requiring to manufacture + easy to repare - can feel loose - requires often metal framing or other reinforcement - often plastic appearance + cheaper to manufacture in large series - often impossible to repair Ensure that all rivet and other metal details are rust-resistant or anti-corrosion protected. Take a critical general view. Materials and details shall endure many years of hard use and tough climate. © Fiber-Form   design notes