The 66 from the floor dimension will allow approximately 13 16 between the cooktop and the bottom front of the microwave.
Over stove microwave height.
Over the range microwave 2 0 cubic feet.
This 66 inch difference from the floor allows approximately 13 inches to 16 inches between the cooktop and the bottom front of the microwave.
Ge specifies for example that its over the range microwave models not be installed over any range whose burners output more than a combined 60 000 british thermal units which is drastically higher than the average 7 000 btus of a standard home range.
According to ge appliances an over the range microwave height should be a minimum of 66 inches mounting height from the floor to the top of the microwave.
The minimum recommended height of the cabinet space between the top of the cooker and the top of the otr microwave is 30 inches.
The height of the cooking space is an important factor to consider as it will dictate the size of the microwave you can buy.
Over the range microwaves require a minimum 66 mounting height from floor to top of the micro.
The width of otr microwaves ranges from 30 to 36 inches height from 14 to 18 inches and depth from 15 to 17 inches.
Manufacturers also place limits on the output capacity of cooktops suitable for use in conjunction with over the range microwaves.
It can be more but any less could limit the size of pots you can use on your cooker disrupting the ease of cooking.