The Pella® 350 Series from Pella of Long Island consists of remarkably constructed vinyl replacement windows and patio doors that are energy efficient and priced to fit any budget. All of these windows and patio doors match the same rigorous standards as other Pella® replacement windows and patio doors.
Developed with a reinforced frame that’s 83 percent tougher than regular vinyl1, Pella 350 Series windows and sliding patio doors also offer precision corner welding to help resist warping and twisting over the seasons. Plus, our exclusive SmoothSeamTM interior welded corners are virtually invisible. Adding to their continuing beauty, our DuraColor™ exterior finish exceeds industry standards for fade resistance2, so you can rely on beautiful, enduring colors for years down the road.
In addition to being appealing and enduring, Pella 350 Series replacement windows and patio doors are the most energy efficient that we carry. The technology 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 increase your energy efficiency even further with triple-pane glass, which also helps lessen the amount of outdoor noise that enters your home.3