GLI 55-0000HU-BK Hurricane Inground Aluminum Solar Reel System Base Kit This hurricane reel system base kit for in ground pool It is manufactured from high quality commercial grade structural aluminum The hurricane is engineered with sealed, high-strength nylon bearings for effortless one-person operation Base kit includes all straps and required hardware for attaching the solar blanket It is recommended to use a 4-inch tube kit for pools 600-square feet and larger or when using thicker mil solar blankets