The Pella® 350 Series from Pella of Lethbridge includes remarkably constructed vinyl replacement windows and patio doors that are energy efficient and priced to suit any budget. All of these windows and patio doors match the same high standards as other Pella® replacement windows and patio doors.
Engineered with a reinforced frame that’s 83 percent sturdier than normal vinyl1, Pella 350 Series windows and sliding patio doors also include precision corner welding to help prevent warping and twisting over the years. Plus, our exclusive SmoothSeamTM interior welded corners are nearly invisible. Adding to their enduring style, our DuraColor™ exterior finish tops industry standards for fade resistance2, so you can expect beautiful, enduring colors for years to come.
In addition to being appealing and durable, Pella 350 Series replacement windows and patio doors are the most energy efficient that we carry. The detail used to create energy efficiency is InsulShield® Advanced Low-E double-pane glass. Filled with argon gas, InsulShield glass options not only protect against extreme temperatures, but also block the sun’s UV rays. You can boost your energy efficiency even more with triple-pane glass, which also helps decrease the amount of outdoor noise that enters your house.3