Professional Contractor Support At Pella®, we’re committed to providing professional contractors with the best windows and doors for nearly any project. Discover more about the advantages of working with Pella by visiting our Hanover Showroom. Dedicated Representatives. Pella’s dedicated sales professionals 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 clients’ needs. 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 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 exquisitely crafted products to meet and satisfy all of your clients’ window and door needs. Pella Certified Contractor. The Pella Certified Contractor program offers training and support programs to enhance your relationship with Pella. Learn more about how you can participate in Hanover Pella showroom's services to support professional contractors in your community.