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Doorway Water Tanks

Doorway Water Tanks
Our doorway tanks—also known as slimline tanks, freestanding tanks, closet tanks, or wall tanks—are specially engineered narrow-profile polyethylene tanks designed to fit through standard door frames (typically 30–36 inches wide) for easy installation in tight or restricted spaces. These versatile tanks stand upright and freestanding without requiring bands, cradles, or additional supports, making them ideal for both residential and commercial applications.Common uses include:
  • Chemical storage
  • Potable water storage
  • Irrigation and rainwater collection
  • Gardening and landscaping
  • Fire protection reserves
  • Space division (acting as a barrier or wall between areas)
Norwesco-designed doorway tanks are frequently placed against walls in garages, gardens, patios, sheds, or along the sides of homes and buildings—providing discreet, space-efficient storage without sacrificing capacity.Constructed from FDA-approved virgin polyethylene resin, these tanks are fully food-grade and safe for drinking water, complying with U.S. FDA regulation 21 CFR 177.1520 (1) 3.1 and 3.2 as well as ANSI/NSF 61 standards for potable applications. Rotational molding with added UV inhibitors ensures excellent protection against direct sunlight, allowing reliable use indoors or outdoors. The seamless design delivers superior durability—highly resistant to cracking, puncturing, impacts, and weather exposure—for a long service life.Key features include:
  • 16" vented manway for easy filling, cleaning, and access.
  • Outlet drain at the base (various sizes available) for convenient draining or pump connection.
  • 2 to 4 flats (molded flat surfaces) for straightforward installation of additional fittings, valves, or accessories.
  • Freestanding stability—no extra supports needed.
We offer doorway tanks in capacities ranging from 250 gallons to 1000 gallons, with various dimensions to suit your space and needs. Customization and fabrication options (such as extra fittings, specific outlets, or color preferences) are available—just reach out to our team.Backed by a 3-year manufacturer warranty from Norwesco, these polyethylene slimline tanks from One Source Plastics provide a practical, compliant, and low-maintenance solution for water, chemical, or rainwater storage in even the most space-constrained locations.Contact us for sizing guidance, customization details, or to discuss how doorway tanks can meet your storage requirements.
  • Norwesco

    SKU: N-41538

    500 Gallon Doorway Water Tank

    $1,400.00
    The item has been added
  • Norwesco

    SKU: N-44310

    750 Gallon Doorway Water Tank

    $1,920.00
    The item has been added
  • Norwesco

    SKU: N-44045

    1000 Gallon Doorway Water Tank

    $2,470.00
    The item has been added
  • Norwesco

    SKU: N-44655

    600 Gallon Doorway Water Tank (Ribbed)

    $3,178.00
    The item has been added