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Capacity depends on the rack size: the smaller collapsible rack holds up to 4 quart jars, 7 pint jars, or 7 half‑pint jars; the larger rack holds up to 9 quart jars, 9 pint jars, or 13 half‑pint jars.

They support both water‑bath and pressure canning. Many steam/water‑bath canners also double as stock pots or steamers for soups, sauces, and large‑batch cooking, while the pressure‑style units and pressure cookers enable faster cooking and multi‑level steaming.

Pressure-style canners and pressure cookers in these results range from about 6.3 quarts up to around 17 quarts, with examples including 6.3 qt, 10.5 qt, and 17 qt models.

The listings include a range of sizes, for example: 6.3 qt, 10.5 qt, 15.5 qt, 17 qt, about 21–21.5 qt, and 33 qt.

Common materials shown are enamel/porcelain‑fused‑to‑steel (enamel‑on‑steel), stainless steel, and cast aluminum. Some stainless or multi‑layer models also feature tri‑ply or encapsulated bottoms for more even heat distribution.

Common accessories include canning racks and jar‑handling tools such as jar lifters or tongs, magnetic lid lifters, and wide‑mouth funnels. Some kits also include lids and bands, jar wrenches, bottle openers, and quick‑start guides.