Size? Length:33″ ; Outside Diameter: 7″; Top: 3″ open; Bottom: 3″ open; Material Area: 145 sq. Filter Material: Trilobal Filtration Fabric. #PLEASE NOTE: Our pool filters are NOT original filters. It is recommended that you can scrub every 2 weeks the fabric with a cartridge cleaner tool and rinse it with a garden hose. Longer Life with Sturdy Core? Premium pleated fabric is durable in the harshest conditions. Even with significant contaminant buildup, our pjan145 pool filter are designed to maintain maximum flow rates throughout the season. Filter service life is around 1-2 years with proper maintenance.