Official public ITB sampleSource linked
Cowlitz County Public Works
4" & 6" IPS PE4710 SDR17 HDPE
10,000 LF total · solid and perforated · 40-ft lengths · delivered purchase.
4,000 LF4" solid
1,000 LF4" perforated
3,000 LF6" solid
2,000 LF6" perforated