The 737 and 737R have a footprint of 33"W x 24"D.
This space is not lost as the sturdy, flat top can serve as a benchtop. Or, you can stack two of the 737s or a 737 and a 737R on top of each other to save space. With a height of 34", the 737 can fit under many benchtops. The 20.5"W x 18.0"D platform is large enough to accommodate nine 1-liter, six 2-liter, twenty-five 250-mL, or two 6-liter flasks.
The 737R is equipped with a frost-free refrigeration system for working at, or below, ambient temperature. The chamber has a built-in outlet used for powering small equipment such as a cell bottle roller or a rocker.
The 747 and 747R design is similar to that of the corresponding 737 and 737R, but offers more capacity.