Aluminum Post Stiffeners provide extra core strength and support for vinyl fence post installations. They can be used for nearly any vinyl fence application but are especially ideal for coastal areas prone to powerful winds from hurricanes and other strong winds. Installation is quick and easy and can be done by both professional-grade installers and DIY homeowners. When appropriately used inside vinyl posts with concrete bases, you can rest assured that your vinyl fence installation will remain fastened securely in place.