Mainstays 21.5-Quart Stainless Steel Water Bath Canner with Tempered Glass Lid
Mainstays 21.5-Quart Stainless Steel Water Bath Canner with Tempered Glass Lid
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Mainstays

Mainstays 21.5-Quart Stainless Steel Water Bath Canner with Tempered Glass Lid

1,160 ratings
Mainstays 21.5-Quart Stainless Steel Water Bath Canner with Tempered Glass LidMainstays 21 5 Quart Stainless Steel Canning Pot with Rack Dual Water Bath Canner and Steam CannerMainstays 5 Piece Complete Water Bath Canning Kit Essential Canning Supplies Starter Kit
Actual ColorWater Bath Canner

Key item features

  • Generous Capacity: This canner offers a substantial 21.5-quart capacity, comfortably holding up to 8 pint-sized or 5 quart-sized jars for extensive canning batches.
  • Sturdy Construction: Built with durable stainless steel, it features a clear tempered glass lid and a double-sided carbon steel jar rack for lasting utility.
  • Dual Canning: The included double-sided carbon steel rack supports versatile setups for both steam canning and traditional water bath canning methods.
  • Visual Monitoring: A clear tempered glass lid allows users to continuously observe the canning process without lifting, ensuring consistent results.
  • Batch Cooking: Beyond food preservation, its large volume is ideal for preparing sizable batches of meals such as chili or soup.
  • Lid Care: Maintain the lid by avoiding use if cracked, cleaning with soft materials only, preventing extreme temperature shifts, and never exposing it to direct heat.
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Specs

Canning tool type, Water Bath CannerVolume capacity, 21.5 qtMaterial, Stainless SteelBrand, MainstaysPiece count, 2Color category, Silver

About this item

Product details

Put up your favorite foods with the Mainstays 21.5-quart canner, built from stainless steel with a clear tempered glass lid so you can keep an eye on the process without lifting the cover. Its large capacity gives you room for sizable canning sessions, and the included double-sided carbon steel jar rack can be positioned two different ways to set up for either steam or water bath canning. With up to 8 pint-sized jars or 5 quart-sized jars fitting at once, it's easy to plan a full batch when you're preserving a seasonal harvest. Beyond canning, the generous pot is also handy for cooking up large batches of chili or soup.
  • 21.5-quart capacity with stainless steel construction
  • Includes a double-sided carbon steel jar rack that can be positioned for steam or water bath canning
  • Holds up to 8 pint-sized jars or 5 quart-sized jars at once
  • Tempered glass lid lets you monitor the canning process without lifting the lid
  • Suitable for food preservation and batch cooking
  • Lid care and use: Do not use lids with cracks or scratches. Cracked or scratched lids can break easily.
  • Lid care and use: Only use soft, non-abrasive materials to clean lids. Metal tools or rough cleaners can scratch the glass, and scratches weaken the glass.
  • Lid care and use: Avoid extreme temperature changes. Do not put hot lids directly in cold water or on cold surfaces.
  • Lid care and use: Do not use lids under or on top of heat sources. They are not broiler safe.
info:
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Specifications

Canning tool type

Water Bath Canner

Volume capacity

21.5 qt

Material

Stainless Steel

Brand

Mainstays

Warranty

Warranty information

This item does not come with a warranty.

Warnings

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Customer ratings & reviews

4.2 out of 5 stars
stars
1,160 ratings497 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars69% (806)
  2. 4 stars11% (122)
  3. 3 stars5% (62)
  4. 2 stars4% (41)
  5. 1 star11% (129)

Reviews summary

Pros

  • : The canner offers competitive pricing and includes a rack.
  • : Accommodates big batches and family gatherings.
  • : Stainless steel and non-stick surfaces wash up quickly.
  • : Has a durable build that heats evenly and consistently.

Neutral

  • : Can be convenient with clear visibility, but may be prone to damage.
  • : Unit includes a handled rack but may rust, bend or be missing.
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Showing 1-3 of 497 reviews

Jul 22, 2026
Reviewer name: Walmart customer
Top Reviewer
Walmart Associate
Item details
Color: Water Bath Canner
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great canner for the price

This is a really good canner for the price. It is a little lighter than some stainless steel canners, but it still looks and feels durable. It's noce to be able to see inside when I'm canning as well...no more having to grab a mitt and remove the lid! The canning rack isn't the best, but it isn't the worst either (I have two other canning racks that fit), but if you are new to canning, it's a good deal. I bought the 2 pack as I do a lot of canning and sometimes I have to run two canners.

Helpful?2XFFUHYDTW2B698345022
Oct 29, 2026
Reviewer name: Reba
Top Reviewer
Item details
Color: Water Bath Canner
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

water bath pot

this was very helpful when canning or cooking for crowds

Helpful?2XFFUHYDTW2B698345022
Aug 30, 2026
Reviewer name: Lena124
Top Reviewer
Item details
Color: Water Bath Canner
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Only holds 7 pint size jars not 8 pint size jars

This canner arrived in good condition despite not having any packaging on it. It's a lightweight good looking pot. The product description on the website states that it holds 8 pint size jars and the label says the same. So I was prepared to use 8 pint size jars to make pickles. However, that is not true. it only holds 7 pint size jars. I tried and tried to get an 8th jar in that rack but it was a no go. I don't think it's too much to expect for a product to match the description and label. Once I got over the surprise of the deceptive marketing and realizing that I could only can 7 pints at a time instead of 8, I decided to keep this canner.

Helpful?2XFFUHYDTW2B698345022
Current price is $33.83
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