A:AnswerHi, the only way to know is by measuring. Yours is very old for a microwave, and I would not expect anything to fit into your old space without some type of modification.
Measure, measure, measure and be prepared to modify.
A:AnswerThis microwave replaced my 2000 GE Profile built in that mounted under my kitchen cabinet. I didn't use the trim kit, I just re-used the old bolts and brackets that installed through the bottom of the cabinet into the top of the unit.
A:AnswerIt's exactly 24 inches wide, 22 and 15/16th deep and 11 1/2 inches high. Unfortunately, I'm having to use it as a countertop because of other concerns.