Microwaves with 1.4 cubic feet of capacity have widths of 21 5/8 to 29 15/16 inches. Their heights range from 12 3/8 to 16 1/4 inches. Their depths vary from 15 9/16 to 17 1/2 inches.
Over-the-range microwaves offering 1.5 cubic feet of space measure 23 7/8 to 29 15/16 inches wide. Their heights fall between 14 1/16 and 17 1/4 inches. Depth measurements range from 15 1/4 to 15 9/16 inches.
Expect widths of 29 7/8 to 29 15/16 inches if you buy an over-the-range microwave with 1.7 cubic feet of capacity. These appliances have heights of 16 1/2 to 17 1/4 inches, and depths of 15 1/4 to 17 1/4 inches.
If you choose a microwave with 1.8 cubic feet of space, you'll find widths of 29 7/8 inches. Heights range from 16 13/32 to 16 3/4 inches and depths run from 15 1/4 to 15 3/8 inches.
Widths of 24 to 29 7/8 inches can be found in over-the-range microwaves with 2.0 cubic feet of capacity. Heights of these units range from 13 3/8 to 16 1/2 inches. Depths fall between 15 7/16 and 19 1/8 inches.