Gravenhurst Plastics manufactures products to meet or exceed various third
party third party testing authorities. Our products are certified to, meet or
exceed the appropriate standards covered by ASTM, UL, CSA and NSF.

In addition to third party testing, Gravenhurst Plastics has an internal Quality

Control Procedures and Policy manual and samples from each production
run must meet or exceed our internal Quality requirements.

All of this assures you, our customers, that the product you source/install
from Gravenhurst will out perform the application it is specified for.

From Corrugated Drainage Tubing to HDPE Conduit to Multi-Duct and C.I.C.

all of our products meet these quality expectations.