At 23 7/8 inches wide, 14 13/16 inches high and 19 5/16 inches deep, this microwave ranks among your narrowest options. The Bosch HMB8020 has 1.5 cubic feet of capacity and features stainless-steel construction inside. The manufacturer recommends its convection baking capabilities for small items like pizza slices, cookies and rolls. The Bosch HMB8020 has a 15-inch turntable and comes in black, white and stainless-steel finishes.
If shallow dimensions are your priority, the Sharp R-1880LS ranks among your options. It is 15 9/32 inches deep, 16 11/32 inches high and 29 15/16 inches wide. This convection model has 1.1 cubic feet of capacity and offers baking, roasting and grilling capabilities. This stainless-steel appliance has a 13-inch turntable you can turn off if desired.
One of the shorter models you'll find is the Frigidaire FGMV154CLF, with a height of 16 13/32 inches. It measures 29 7/8 inches wide and 15 7/16 inches deep. This stainless-steel unit offers 1.5 cubic feet of capacity. The manufacturer says the 10 preset convection options on this appliance allow you to set the heat from 100 to 450 degrees. The unit has a 13 1/2-inch glass turntable.
Another option for shallow and shorter dimensions is the GE PVM1790DRCC. Its convection system uses a 1500-watt heating element for baking and browning. The manufacturer says it can cook up to 25 percent faster than conventional cooking methods. It stands 29 15/16 inches wide, 16 7/16 inches high and 15 3/8 inches deep. This appliance provides 1.7 cubic feet of capacity, and its turntable is 13 3/5 inches in diameter. It has a bisque finish, but you can also buy it in black, white and stainless steel.
A product with the same exterior dimensions and capacity as the GE microwave is the LG LMVH1711ST. This convection appliance also uses the same wattage in its convection element. The LG microwave has a stainless-steel interior and exterior, along with a 13 1/2-inch turntable.