The SG and ZG are not exactly the same though. Just from the pictures I can see that the bases are different. The SG has L-shaped legs and a bottom shelf while the ZG has square legs that are larger than the DLX legs but no bottom shelf. There were also different specs for many features. I took a picture of the ZG spec sheet at the store and compared it to the SG specs on the website and there are slight differences in capacities. For example ZG 3778 cubic inch - SG 4859, grilling area ZG 776- SG 811, hopper volume ZG 18 lbs - SG 22, ...
The digital controller controls temperatures from 150F to 500F in 5-degree increments; that’s the most precise we’ve found on a pellet grill, and gives you a good, precise burn. There’s also Sense-Mate, a thermal sensor that monitors the smoker’s internal temperature, so you can keep an eye on it remotely on your phone via Wifi, letting you adjust the temperature from the app.
You want even grilling: One of the downsides of using a charcoal grill is ensuring that the entire grilling area is evenly heated. Spreading the charcoal evenly and avoiding hot spots is difficult. Traeger’s pellet grilling system overcomes this problem with a fan that evenly distributes the heat throughout the grilling area, much like a wood-fired oven would have.
With 341 square inches of cooking space and a digital control board that sets the temperature from 180 to 500 degrees, you’ll be cooking whole meals in this grill, even though it’s the smallest model that Pit Boss makes. It will hold up to a dozen burgers for parties, or a chicken and vegetables for the family dinner. When cooking is done, the porcelain coated grill grates are easy to clean.