Home Infrastructure Environmental Sanitation Rectangular section collector duct Rectangular section collector duct Description Save Rain channel to vent large amounts of water Format DWG File size 1.91 MB DOWNLOAD DWG share your appreciation Related Posts Septic tank Siphonic casket hanging interior network Stormwater design with profiles and details side walls Cuculi town center sewerage intakes drain detail slow filter 3d model industrial plant administration separator tank culvert concrete frame Sanitation Residual water treatment plant return bag Stone Lined Channel Plan Rainwater on roads doc sicra river Sewers Storm drainage in the urban area of Huanta Manhole