Type D, Double Storm Inlet
Inlets
Designed to meet ASTM C913 standards, our Type D Double Storm Inlet delivers a minimum concrete strength of 4,000 psi and grade 60 rebar reinforcement for exceptional durability. Built for H-20-44 loading, it features secure butyl rubber-sealed joints, steel-reinforced polypropylene steps, customizable pipe penetrations, and a field-poured top section, ensuring long-lasting performance and reliability in stormwater systems.