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)
4' Diameter Manhole Category:Drainage & Manholes Use:Commercial, Sanitary, Stormwater Class:H-20 Type:Concrete Weight:Base: 1,376# (867#/VF) Capacity:94 gal/VF Interior Dimensions:4'-0" Dia. Exterior Dimensions:4'-10" Dia. Datasheets Manhole Weight & Size Chart MaineDOT Structure Designation Manhole Joint Profiles (ALL) 4-ft Manhole Spec Sheet
12" Drainage Trench (Cast Iron Grate) Category:Drainage & Manholes Use:Commercial, Residential, Stormwater Class:H-20 Type:Concrete Size:12" Weight:256 lbs/LF Capacity:11.9 gal/LF Interior Dimensions:12"W x 19"H x 4' or 8'L Exterior Dimensions:20"W x 24"H x 4' or 8'L Datasheets 12in Trench-CI (ACI)