Professional Contractor Support Pella® is committed to providing professional contractors with the best windows and doors for almost any project. Discover more about the benefits of working with Pella by visiting our Oklahoma City 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 solution for your clients’ needs. Built To Order. Pella products are made to order, and our delivery truck will arrive at the exact time you need it. Our products are packaged for protection and easy handling to make the installation go smoothly. Full Range of Products. As a Pella partner, you’ll be granted access to our wide range of beautifully 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 affiliation with Pella. Learn more about how you can participate in Oklahoma City Pella showroom's services to support professional contractors in your community.