The Pella® 350 Series from Pella of Portsmouth features remarkably crafted vinyl replacement windows and patio doors that are energy efficient and priced to fit any budget. All of these windows and patio doors mirror the same high standards as other Pella® replacement windows and patio doors.
Developed with a reinforced frame that’s 83 percent sturdier than normal vinyl1, Pella 350 Series windows and sliding patio doors also offer precision corner welding to help withstand warping and twisting over time. Also, our exclusive SmoothSeamTM interior welded corners are virtually invisible. Adding to their lasting beauty, our DuraColor™ exterior finish exceeds industry standards for fade resistance2, so you can count on beautiful, vibrant colors for years down the road.
In addition to being good-looking and durable, Pella 350 Series replacement windows and patio doors are the most energy efficient that we carry. The feature used to create energy efficiency is InsulShield® Advanced Low-E double-pane glass. Filled with argon gas, InsulShield glass options not only shield against extreme temperatures, but also block the sun’s UV rays. You can boost your energy efficiency even further with triple-pane glass, which also helps decrease the amount of outside noise that comes inside your room.3