Professional Contractor Support At Pella®, we’re dedicated to providing professional contractors with the best windows and doors for almost any project. Learn more about the benefits of working with Pella by visiting our South Portland Showroom. Dedicated Representatives. Pella’s dedicated experts will assist you with estimates, on-site project management, walk-throughs and service after the sale. We will partner with you find the best products for your clients’ projects. Built To Order. Pella products are built to order, and our delivery truck will arrive when you need it. Our products are packaged for protection and easy handling to make the installation a breeze. Full Range of Products. As a Pella partner, you’ll receive access to our entire range of exquisitely crafted products to meet and fulfill all of your clients’ window and door needs. Pella Certified Contractor. The Pella Certified Contractor program offers training and support programs to strengthen your partnership with Pella. Learn more about how you can participate in South Portland Pella showroom's services to support professional contractors in your region.