Polymer concrete channels

class A15 | B125
width 100 | 150 | 200

class A15 | B125 | C250
width 100

class C250
width 150

class A15 | B125 | C250
width 100 | 150 | 200 | 300

class C250
width 100 | 150 | 200 | 300

class D400 | E600
width 100 | 150 | 200 | 300

class D400 | E600
width 100 | 150 | 200 | 300

class D400 | F900
width 100 | 150 | 200 | 300