A propane fire pit table is part heater, part coffee table, and the specs that matter are the ones that decide how much heat you actually feel and where the tank goes. BTU output and tabletop material do more work here than brand.
Most patio propane fire tables sit between roughly 40,000 and 60,000 BTU. Higher output means more radiant heat and faster fuel use, since a 20 lb propane tank is consumed in a handful of hours at full output, so the practical difference between models is as much about run time as warmth.
Almost every model conceals a standard 20 lb propane tank inside the base. Check that the door or access panel is reachable once the table is in position against a wall or railing, because swapping the tank is a routine job, not a rare one.
The stated inch measurement is the table, not the flame. A larger table gives more usable surface for drinks and food around a burner that may be no bigger than a smaller model's. If you want a table that happens to make fire, size up; if you want heat, read the BTU figure.
CSA listing is a safety certification worth having on a gas appliance. A tempered-glass wind guard is not just cosmetic: it keeps the flame stable in a breeze, which is exactly when you want the heat.
Fire tables are among the few outdoor products where the frame is almost always powder-coated steel, so plan on inspecting the coating for chips and touching them up before rust starts.
More depth: how the five common materials fail and what weather ratings actually commit a seller to.
For ambience and taking the edge off a cool evening, 40,000 BTU is ample. Toward 60,000 you get noticeably more radiant heat and can sit further back, at the cost of faster propane consumption. Neither figure heats an exposed patio the way a dedicated patio heater does: a fire table warms the people around it, not the space.
Only with real clearance overhead and to the sides, and never in an enclosed space: it is an open-flame gas appliance producing combustion byproducts. Check the manufacturer's stated clearances, and on a wooden deck use a protective mat under the base.
Roughly four to ten hours from a standard 20 lb tank, depending on output and whether you run it wide open. Turning the flame down extends that considerably, and most tables have a variable control for exactly that reason.