Professional Contractor Support At Pella®, we’re dedicated to providing professional contractors with superior windows and doors for virtually any project. Find out more about the benefits of working with Pella by visiting our Wilmington Showroom. Dedicated Representatives. Pella’s dedicated representatives will work with you on estimates, on-site project management, walk-throughs and service after the sale. We will partner with you find the best fit for your clients’ projects. Built To Order. Pella products are made to order, and our delivery truck will arrive when you need it. Our windows are packaged for protection and simple handling to make the installation go smoothly. Full Range of Products. As a Pella partner, you’ll have access to our full 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 relationship with Pella. Learn more about how you can participate in Wilmington Pella showroom's services to support professional contractors in your community.