pvc windowsill board, 600*4300mm, Italian formula, super waterproofing, fireproofing, no formaldehyde, easy fixing. pvc windowsill board, upvc material, super waterproofing, no deforming, fireproofing, no formaldehyde, no other toxic air releasing like marble board. When installing, there's noany dust on site, very green.A 20' container could hold 180pcs and a 40' container could hold 360 pcs.