Back   Sanitary Sewers and Forcemains List #  4.70.48.63 Maintenance Hole Adjusters High Density Polyethylene Date:  Jan 17, 2022 Specific Requirements: 1) Thickness of high density polyethylene unit shall not exceed 25 mm.   Company Product Model/Series Remarks Structure Shims Inc. 28 Chapman Road Orangeville ON  L9W 5C7 Tel: 519-940-4366 Cellular: Fax: 519-940-4960 Structure Shims Structural Shims