18" Round Riser Category:Risers Use:Residential, Sanitary Class:Pedestrian Type:Concrete, Septic Tank Weight:337 lbs Interior Dimensions:~25" Dia. Exterior Dimensions:30" Dia. Datasheets Round Risers
Donut Risers (24-in ID) Category:Risers Use:Commercial, Municipal, Sanitary, Stormwater Class:H-20 Type:Concrete Interior Dimensions:24" Diameter Exterior Dimensions:40" Diameter Datasheets Donut Risers (24-in ID)
Round Riser Cover Category:Risers Use:Residential, Sanitary Class:Pedestrian Type:Concrete Weight:138 lbs Exterior Dimensions:30" Dia. Datasheets Round Risers