Putting the correct size hole into the stainless steel shower pan is very important. Making an error is not an option. I admit I was over cautious when drilling this hole!
The shower pan was made by pinnaclewc, they sell through Etsy Search on Etsy for: “Drip Pan for Washing Machine Stainless Steel”
Milwaukee Hole Dozer Hole Saw Kit https://amzn.to/3bUYYAN