Pella® 350 Series Windows and Doors

The Pella® 350 Series from Pella of Casper includes impressively 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 demanding standards as other Pella® replacement windows and patio doors.

Engineered with a reinforced frame that’s 83 percent tougher than ordinary vinyl1, Pella 350 Series windows and sliding patio doors also include precision corner welding to help resist warping and twisting over time. Also, our exclusive SmoothSeamTM interior welded corners are practically invisible. Adding to their continuing looks, our DuraColor™ exterior finish surpasses industry standards for fade resistance2, so you can rely on beautiful, vivid colors for the foreseeable future.

In addition to being appealing 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 intense temperatures, but also block the sun’s UV rays. You can improve your energy efficiency even further with triple-pane glass, which also helps reduce the amount of outside noise that comes inside your home.3

Pella 350 Series
Pella® 350 Series Catalog

Available Window Styles

Available Door Styles

Find out more about the features available with Pella 350® Series windows and patio doors by clicking below to plan a free, in-home consultation or touring your nearby showroom.





Based on the force required to bend a window frame profile.
In testing performed in accordance with ASTM testing standards, Pella® Duracast® has displayed superior performance in strength, ability to withstand extreme heat and cold, and resistance to dents and scratches.
3 Computer simulation average compared to single-pane wood windows. Actual results may vary.