The 1.5" Above Ground Filter System Hard Plumb Adapter Kit provides a simple and reliable solution for converting a Doughboy filtration system to a hard-plumbed connection. Designed to improve system peformance and longevity, this kit allows for a secure transition to rigid or PVC piping, helping reduce leaks and enhance overall water flow efficiency. It creates stable, permanent plumbing connection that supports consistent filtration performance in above ground pool systems.