Norwesco Underground Tank Lid And Riser (36\" H x 6\" D) 1
Lead Time:  3-7 Days
Ships From: IA


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Model: N-63830
Manufacturer: Norwesco

This is the Norwesco Underground Tank Lid And Riser (36" H x 6" D).

This manhole extension is used for any of the following Norwesco tanks:

  • Low Profile Septic Tanks
  • Low Profile Cistern Tanks
  • Legacy/Ribbed Septic Tanks
  • Bruiser Tanks
  • Spherical Pump Tanks
  • Holding Tanks: 2000 Gallon (Models 42559 and 44593), 2500 Gallon, 2600 Gallon, 3525 Gallon, 5025 Gallon
  • Will ship from Iowa if ordered standalone - otherwise this will ship with the purchased tank

Ships FREE with the purchase of a Norwesco tank

Drawings & Manuals
PDF  Norwesco Underground Tank Lid And Riser (36" H x 6" D)

Customer Pickup Locations
PDF  Norwesco Customer Pickup Locations And Addresses
Please Note: Customer pickup is available for a flat $25 fee.
Norwesco Septic Tank Warranty Details:

Failure to comply with the points below voids warranty.
A. Tanks are not fire-resistant. Do not store them near an open flame or heat in excess of 180 F.
B. Do not install any tank under the path of vehicles or heavy equipment.
C. Do not leave Low Profile septic tanks empty for extended periods of time.
D. Low Profile septic tanks and cisterns are designed only for use as underground tanks.
E. Low Profile septic tanks and Low Profile cisterns may be used as holding tanks or for pumping applications where permitted by local codes.
F. Low Profile natural colored cisterns are made of resins that meet FDA specifications for the storage of drinking water and can be used for that application.
G. Protect the tank from sharp objects which could puncture it and cause leakage.
H. Where saturated soil or seasonal high water tables are indicated between the bottom of the tank and the ground surface, see separate Supplemental Installation Instructions on our website.
I. For installations requiring counter-buoyancy measures; please refer to Counter-Buoyancy Instruction on our website.
J. Maximum temperature of liquid entering tank is 120 F.
K. Maximum bulkhead fitting size is 4". It is not advised to use this plastic underground tank for any application other than typical household sewage. Such uses would void product warranty.


Manufacturer warrants that if this part is proven to be defective in material or workmanship within three (3) years from the date of manufacture, manufacturer will (at company's option) either replace or repair said part. This standard limited warranty does not apply to damages resulting from misuse, improper application of recommended materials, accident, or improper installation or maintenance. Remedy to the buyer is limited to the replacement of any defective product (or its component where applicable), F.O.B. point of manufacture. The buyer's remedy under this warranty does not include any other direct or indirect consequential damages which result from defects in material and/or workmanship of its products.

INC 5000 Award!
Inc 5000 - Award - 2023 has been awarded a ranking with the INC 5000 - 3 years in a row - of the fastest growing private companies in America!