Pella Products, Inc., Owner Finds Door to Success Posted on January 29, 2020 in Pella Windows & Doors of Western Massachusetts Al Herringshaw first joined Pella Products, Inc. as a teenager in 1985. After 34 years in the windows and doors industry — all with the same company — he's worked his way up to ownership.Now in his fourth decade with the company that has locations throughout Western Massachusetts and Vermont, he is still invigorated by windows and doors and ready to take on the challenge of owning a business.Read the story of his long journey to the top in BusinessWest.