The answer is yes but the question is will it work the way you need it to. FRP is Fiberglass Reinforced Plastic and these are usually pultruded shapes that are very strong by weight and very dense. Cell sites are designed to have certain RF performance results and using pultruded FRP shapes in the screening interferes with the RF signal. FRP shapes are needed in some cases to meet the structural requirements of the site and perform better than conventional building materials such as steel and wood. However, FRP pultruded shapes should be used as little as possible and avoid having them directly in front of the antennas.