The Related link shown below should give you an option to search for an owners manual and the watts should be listed. However, please take into consideration that the power of a microwaves watts dull over time, what may have been 1100 watts when you bought it, ten years later may only really function at 800 or 900 watts.
No,the Whirlpool microwave trim kit is designed specifically for the whirlpool microwave.
1450w
The wattage output of the Frigidaire FMV157GS 0.5 CuFt Over-The-Range Microwave Oven is 1,000 watts.
The GE Spacemaker II JEM25DMBB 1.0 CuFt Countertop Microwave Oven has a 800 wattage of cooking power.
See chart on this website http://www.microwavecookingforone.com/Charts/Wattage.html
This Whirlpool microwave has a plate that rotates cooking your food evenly.
The wattage of the GE Profile Spacemaker PNM1871SMSS 1.8 CuFt Over-The-Range Microwave Oven is 1100 watts.
600 Watts
600W
To determine the wattage of a microwave, look for a label or sticker on the back or inside the microwave's door. The wattage is usually mentioned in terms of "W" or "Watts" and may range from 600W to 1500W or more.
Although there is no set standard, most recipes are tested with a 1000 Watt microwave. If your microwave has less wattage, add 10% more time per 100 Watts lower to the recipe. This should be about the time needed to cook the recipe properly.
1100w