Professional Contractor Support At Pella®, we’re committed to providing professional contractors with superior windows and doors for nearly any project. Learn more about the perks of working with Pella by visiting our Concord Showroom. Dedicated Representatives. Pella’s dedicated experts will offer assistance on estimates, on-site project management, walk-throughs and service after the sale. We will partner with you find the best products 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 and doors are packaged for protection and simple handling to make the installation a breeze. Full Range of Products. As a Pella partner, you’ll receive access to our entire range of beautifully 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 strengthen your affiliation with Pella. Learn more about how you can participate in Concord Pella showroom's services to support professional contractors in your area.