Monthly Payments to Fit Your Budget At Westerly’s Pella® Showroom, our staff wants to help make your window and door replacement search easy and affordable. That’s why we have a variety of product lines to fit nearly any budget and a payment plan that makes it all work. Our Westerly team will help you pick, install and assist with the financing for your project. GreenSky has a payment plan in cooperation with Pella, available to our customers Financing options may vary by region. Call your Westerly Pella Showroom to better understand your financing offer. Pella products must be installed by a Pella professional installer to qualify.