Uuni Pro measures 

Length: 740 mm (29.1")

Width: 490 mm (19.3")

Height 790 mm  29.1” (31.1”), including the chimney. 

The optional Gas Burner and Pellet Burner add approximately 150 mm (6") to the length of the oven. The footprint of Uuni Pro is 442 mm (17.4”(W)) x 632 mm (24.9” (L)). 

The size of Pro's cooking surface is 450 x 450 mm (17.7"x17.7"), which can comfortably fit a 16" pizza.

You can find further details on Pro's dimensions right here.