Lawson SuperSump 18" x 18"
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Lawson SuperSump 18" x 18"

Item Number: NNSG81850

SuperSump eliminates the need for certification of field-formed sumps by a licensed design professional.

ASME-2007 and NSF Listed, the Lawson Aquatics SuperSump now adds peace of mind and efficiency to its long list of benefits and advantages. The SuperSump with SuperFlow™ main drain grating are pre-certified which allows you to move forward with construction and avoid the unnecessary delay of field inspection and concrete sumps. Add to this the highest flow rate for maximum efficiency, it includes everything you need!

SuperSump design features include:

  • Internal plumbing fittings instead of external. Allows stacking and avoids breaking off or cracking during shipment, pressure testing or handling.
  • Unique built-in water stop with two vertical extensions. Prevents water passing over the flange.
  • A solid one-piece, injection-molded unit. Less expensive than fabricated PVC sheets, stainless steel or fiberglass.
  • Tapered body for strength – allows for water expansion during freezing, and easily stacks to reduce storage space and shipping costs.
  • Dimensions: 18" × 18"
  • Outlet: 8"
  • Floor GPM: 816
  • Wall GPM: 712
  • Open Area: 183.06 square inches

IMPORTANT NOTICE: These drain covers are for use in Multiple Drain Applications only; that is, two or more of the same size drains to a single pump. It is not for use in wading pools or in-ground spas. If you order this item, you acknowledge that the product is for multiple drain application use only. Any use to the contrary could cause injury or death and would be ain violation of the VGB 2008 Act and ASME/ANSI 112.19.8 Standard as administered and monitored by the Consumer Product Safety Commission.

Lawson Aquatics item number: MLD-SG-1818-WT

Note: Must be ordered in multiples of 2

  • Contact us for pricing

  • Availability: Contact us for availability information

This item is eligible for return.

Neptune Benson products are eligible for return within 1 year of delivery. Returns are subject to manufacturer inspection. Items that are returned for credit must be standard, current, and saleable items in "Like New" condition. Any cost incurred to restore items to this condition will be deducted from the final credit. Returns are subject to a 25% restocking fee or $50 (whichever is greater).

Contact us to obtain a Return Authorization.