PolyCore custom plantation shutters are different than any other synthetic shutters. Aluminum reinforcing is co-extruded with the shutter components. This provides for a very strong, rigid, durable shutter that will not bow, warp, peel, crack, or need repainting. Further, unlike other poly shutters that are only glued together, PolyCore’s aluminum reinforcing allows for them to BOLTED together, PolyCore is highly resistant to the environment and are a great choice for areas that have moisture, such as bathrooms. Their durability makes them a great choice for shutters over sliding glass doors.