Professional Contractor Support Pella® is dedicated to providing professional contractors with the right windows and doors for virtually any project. Find out more about the benefits of working with Pella by visiting our Overland Park 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 solution for your client. Built To Order. All Pella products are built to order, and our delivery truck will arrive when and where you need it. Our windows are packaged for protection and safe handling to make the installation go smoothly. Full Range of Products. As a Pella partner, you’ll have access to our wide range of handsomely crafted products to meet and exceed 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 Overland Park Pella showroom's services to support professional contractors in your region.