Selection of a type and height of cleats depends on the material to be conveyed and the angle of inclination:

Type of material	Material example	Max. angle of inclination
		Height of cleats
		H(mm):	H(mm):	H(mm):	H(mm):
		14	16	25	32
Powdery	Flour, etc.	25°	25°	28°	30°
Loose flowing	Corn, barley, wheat, rye, etc.	20/25°	20/25°	25/30°	25/30°
Loose rolling	Gravel, ground stone, etc.	25°	25°	28°	30°
Sticky	Wet sand, ash, wet loam, etc.	30°	30/35°	35/40°	40/45°
Packed	Sacks, paper sacks, etc.	30/35°	30/35°	35/40°	35/40°