Skip to content
TOUGH JOBS DONE RIGHT: Serious Tools Up to 50% Off. Shop the Deals >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.

Free Gift Card on All Orders Over $100 See Details

Free Gift Card Details

$100 Order
$10
gift card
$250 Order
$25
gift card
$500 Order
$50
gift card
$1000 Order
$100
gift card
  • The promotion will be automatically applied on the Shopping Cart page.
  • To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
  • Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
  • E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
  • Free e-gift cards expire 10/01/26.
  • Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
  • Valid online and in participating retail stores.
  • Limited-time offer. Subject to change without notice.
Print

Norwesco Legacy Single Compartment Ribbed Septic Tank — 500 Gallons, Non-Plumbed, Model# 41320-DS

Item# 6614978
Norwesco Legacy Single Compartment Ribbed Septic Tank — 500 Gallons, Non-Plumbed, Model# 41320-DS

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Norwesco Legacy Single Compartment Ribbed Septic Tank — 500 Gallons, Non-Plumbed, Model# 41320-DS

Click or Tap image to Zoom

$1199.99

  • Shipping: 

    Factory shipped

  • Store Pickup: 

    Not available - online only
  • EASY INSTALLATION: Norwesco's polyethylene septic tanks are designed for durability and seamless, effortless installation, making them the ideal choice for septic system replacement and new home construction.
  • ROTATIONALLY MOLDED: Norwesco septic tanks are expertly crafted through a rotational molding process, producing a seamless, watertight tank in a single piece.
  • SUPERIOR DESIGN: Norwesco Legacy tanks are engineered with a superior rib design and strategic placement to ensure unmatched structural integrity.
  • CORROSION-RESISTANT MATERIAL: Polyethylene is completely unaffected by soil chemicals and the chemicals and gases in sewage. This means that Norwesco septic tanks will never rust or corrode and require no additional coatings, unlike other tanks.
  • WATERTIGHT LID: Norwesco septic tanks are fitted with a tough, watertight lid that is superior to other lid designs. Upon leaving our factory, the lid is securely attached to the tank with stainless steel screws and comes standard with a gasket, ensuring a reliable watertight seal.

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Warranty

  • Compare

Product Summary

Since 1939, Norwesco has been a trusted name among generations of hardworking Americans, delivering top-quality storage solutions that stand the test of time. Proudly made in the USA, Norwesco products are crafted to the highest standards, surpassing cheap imitations that suffer from brittle spots, poor curing, and inconsistent wall thickness. With a legacy of quality and dependability, Norwesco remains the go-to choice for reliable, trustworthy liquid storage in the USA. Norwesco septic tanks are rotationally molded and highly resistant to soil chemicals and sewage gases. They are also approved by the FDA for wastewater storage, ensuring a high-quality and environmentally safe tank. (Before installing any septic tank, it is important to check with your local health department to ensure compliance with specific county or state requirements.)

What's Included

    (1) Tank (1) Lid

Features + Benefits

  • EASY INSTALLATION: Norwesco's polyethylene septic tanks are designed for durability and seamless, effortless installation, making them the ideal choice for septic system replacement and new home construction.
  • ROTATIONALLY MOLDED: Norwesco septic tanks are expertly crafted through a rotational molding process, producing a seamless, watertight tank in a single piece.
  • SUPERIOR DESIGN: Norwesco Legacy tanks are engineered with a superior rib design and strategic placement to ensure unmatched structural integrity.
  • CORROSION-RESISTANT MATERIAL: Polyethylene is completely unaffected by soil chemicals and the chemicals and gases in sewage. This means that Norwesco septic tanks will never rust or corrode and require no additional coatings, unlike other tanks.
  • WATERTIGHT LID: Norwesco septic tanks are fitted with a tough, watertight lid that is superior to other lid designs. Upon leaving our factory, the lid is securely attached to the tank with stainless steel screws and comes standard with a gasket, ensuring a reliable watertight seal.

Key Specs

AttributeSpecification

item#

6614978

Brand

Norwesco

Manufacturer's Warranty

3 year limited warranty

Ship Weight

215.0 LB

Max. Capacity

500 Gal

Max. PSI

0

Material

Polyethylene
AttributeSpecification

Max. Temperature Rating

120 °F

Discharge Port

2 in

Includes

Tank and Lid

Color

Yellow

Finish

Other

Product Weight

165.0000 lb

Dimensions L x W x H (in.)

101.0 x 51.0 x 47.0 in

Reviews

Questions & Answers

Questions

Warranty

Manufacturer's Warranty

3 year limited warranty

Recently Viewed Items

This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.