Daldorado DalMAX Frame & Grate, 18 IN X 36 IN
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Daldorado DalMAX Frame & Grate, 18 IN X 36 IN

Item Number: NNDF83650

Introducing the Daldorado DalMax™ series of Frame & Grate for new construction, and replacement Frame & Grate for unblockable large area main drains. The DalMax™ is certified to APSP-16-2017 Standards by IAPMO, and NSF certified for material composition.

Daldorado is the ONLY American company to design & engineer its APSP-16-2017 Main Drain grates, whether new or VGB replacement, to give a 25 year service life.

DalMax™ main drain grates are made from the highest quality PVC that meet or exceed IBC standards. With a large open area of 62% and the highest flow rate in the industry, DalMax™ is the clear choice for large area main drain replacement (frame and grate).


  • Open area ~ 62%
  • Floor or wall installation
  • Grates have a 25 Year Service Life under VGB
  • 10 Year Warranty
  • Color: White


  • Dimensions: 18" × 36"
  • Floor GPM: 2080
  • Wall GPM: 1496
  • Open Area: 62%

Daldorado item number: DALMAX-FG-1836

$331.39 /EA
    • EA
  • Availability: Contact us for availability information

This item is eligible for return.

All standard size stock items that are unused and in “resellable” condition may be returned or exchanged within 90 days of the date of the invoice in their original packaging and are subject to a 25% restocking fee. If Daldorado must repackage any items, a repackaging fee may apply. If any returned item is not in a resellable condition, no credit will be given and will either be discarded or returned to the customer at the customer’s expense.

Contact us to obtain a Return Authorization.

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