The Astral laminated 24 Inch, 30 Inch and 36 Inch Aster filters offer 100% non-corrosive all fiberglass construction with a smooth exterior gel coat. This design eliminates fiberglass "splintering" found on other filter brands, providing a fresh new look for many years. A unique, patented pressure lid system is provided which eliminates the traditional nut and bolt style lid and provides a tool free, lid-locking arrangement. Astral designed internals are constructed of SCH 40 PVC and polypropylene for long life and full flow. The filters are rated at a 50 PSI working pressure and a 75 PSI test pressure. Includes 2 Inch ports on 24 Inch, 30 Inch and 36 Inch filters as well as 2-1/2 Inch slip x slip male adaptors on 36" filters for manifolding systems together. 24 Inch, 30 Inch and 36 Inch Aster Filters and carry a 5-year limited warranty