Infinity Exteriors’ Milwaukee replacement window experts custom install vinyl Richlin 900 double hung windows like these throughout Milwaukee and Waukesha counties. Seven times more airtight than traditional residential vinyl double hung windows and over 11 times more airtight than traditional residential wood double hung windows, it is no wonder the Richlin 900 vinyl windows are a top choice among consumers. Backed by a Richlin lifetime manufacturer warranty and an Infinity Exteriors lifetime workmanship warranty, your Milwaukee replacement windows will weather through anything! Improve energy efficiency in your home, while creating picturesque views. Contact Infinity Exteriors’ Milwaukee replacement window installers today!