Windscreen-wiper blade

The blade (1) has an aerodynamic deflector (9) longitudinally extending to top of a wiper blade part (5), and fluid circulation channels (31, 32) extending longitudinally and comprising a spray opening (35). Lower side skirts (43, 44) longitudinally extend on a lateral side from the wiper blade part and from the spray opening, where the spray opening is located between the wiper blade part and the lower side skirts. The fluid circulation channels are located in a side part of the aerodynamic deflector. An independent claim is also included for a method for manufacturing a windscreen-wiper blade.