Concrete Riser Lid
A heavy-duty lid designed specifically to fit these 24″ID risers. It measures 27″ in diameter and 3″ thick to provide a secure, flush seal at the surface.
Learn how to calculate your order here
Result
Concrete Calculation Disclaimer:
Calculations provided by this tool are for estimation purposes only. Actual yardage may vary due to site conditions, such as uneven subgrade or bulging forms. To ensure you have enough material, it's recommended to add an additional 1/4 to 1 cubic yard to the calculator results. Depending on the subgrade's levelness, larger pours of 20 yards or more may require up to 10% additional.