Designed with high-performance urethane polymers, the Leaf Defier family of gutter protection from FXI Building Products Corp. improves stormwater management, enhances building durability, and helps prevent pest infestations by allowing water and fine particulates to flow freely through gutter systems. The systems, which are inserted into gutters, are fire-resistant to 482 F and incorporate an environmentally safe biocide and fungicide to resist the growth of organic compounds.; 866.795.4770.