Daldorado Custom Main Drain
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Daldorado Custom Main Drain

Item Number: NNDCSTM50

Daldorado custom large area main drain grates are IAPMO and NSF certified APSP-16-2011. Whether you need a 24" × 124" size or 72" × 72" size with custom rounded corners, Daldorado will construct your drain grate to fit any commercial swimming pool project. For aquatic designers here's your chance to get creative, the possibilities are endless!*

Contact us for specification assistance and pricing.

*Calculated using "Q" formula per the APSP-16 Standard Examples of Custom Sizes, available in 1" increments in width no more than 24" unsupported. Some resstrictions may apply. Please contact us for more information.


  • Certified for APSP-16 (VGB) use for new and replacement
  • Virtually any size or shape can be constructed from design specifications
  • Open area ~ 37.5%
  • Frame and frate made of high-grade UV-stable PVC (Axiall 7140) ~ Certified for NSF50
  • Floor or wall installation
  • Available in white, bone and gray
  • Stainless Steel screws and instructions included
  • 25 Year Service Life under VGB
Available Colors:

Note: Colors are representative of the actual product color. Screen monitor settings and printer ink may cause variability.

  • Contact us for pricing

  • Availability: Contact us for availability information

This item is not eligible for return.

Daldorado items that require custom fabrication cannot be returned.

Contact us for more information.