Raw material: base-polymer concrete
Gap grating-galvanized steel or stainless steel
Parts: polymer concrete base,sump, access hole
Internal width: 100mm, or 150mm
Gap Grating: with middle gap or with side gap
Internal size of the gap: 15mm
Gap height: with middle gap- 75mm, 100mm, 150mm
With side gap- 100mm, 150mm