Astralpool Longitudinal Grating tile Heigh 24mm. Width 195 mm. Made in PP (polypropylene) stabilized against UV rays. Standard white in color. It is necessary to construct the channel 5mm wider that the grating itself, to allow for easy of removal and to allow expansion. The longitudinal design of the tiles ensures that any excess water from the pool is not allowed to overflow onto the pool surround keeping this area dry. For clicking together the same types of male-female tiles (5 units = 1,024m). Their flexibility enables obtaining a curve with a minimum radius of 5m.