The cross wall MAREVA D50, is an essential pool accessory for the installation of the broom and discharge nozzles of your pool. Liner or concrete, you can use this cross wall Mareva with these 2 types of basin. Advantages: Ensures the correct filtration of your pool Compatible with a pool concrete or liner Performance: Length: 300 mm 2 "Diameter: 50 mm Color: white Material: ABS plastic Packaging: Comes in its original packaging