Professional Contractor Support At Pella®, we’re committed to providing professional contractors with the right windows and doors for almost any project. Find out more about the perks of working with Pella by visiting our Saint Louis Showroom. Dedicated Representatives. Pella’s dedicated representatives will assist you with estimates, on-site project management, walk-throughs and service after the sale. We will partner with you find the best solution for your client. Built To Order. All Pella products are made to order, and our delivery truck will arrive when you need it. Our windows are packaged for protection and safe handling to make the installation as smooth as possible. Full Range of Products. As a Pella partner, you’ll have access to our entire range of beautifully crafted products to meet and exceed all of your clients’ window and door needs. Pella Certified Contractor. The Pella Certified Contractor program offers training and support programs to leverage your affiliation with Pella. Learn more about how you can participate in Saint Louis Pella showroom's services to support professional contractors in your area.