Professional Contractor Support At Pella®, we’re committed to providing professional contractors with the best windows and doors for nearly any project. Learn more about the advantages of working with Pella by visiting our Long Island Showroom. Dedicated Representatives. Pella’s dedicated representatives will offer assistance 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. All Pella products are built to order, and our delivery truck will arrive at the exact time 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 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 enhance your relationship with Pella. Learn more about how you can participate in Long Island Pella showroom's services to support professional contractors in your community.