T-Lock Manholes (36" I.D. - 144" I.D.)
Like all other parts of the sewer system, manholes are susceptible to corrosion and, therefore, must be protected or they will ultimately fail. The T-lock Liner Precast Manhole system is designed for new construction and replacement sanitary sewer manhole applications to provide complete corrosion protection.
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- Shaft (Center & Bottom Sections)
CALPORTLAND CONCRETE PRODUCTS
519 South Benson Avenue, Ontario, CA 91762
CALL US: (909) 983-9789