Pella casement windows are traditional in every detail – with all the Pella innovations you demand. Our quality select wood is treated with Pella’s exclusive EnduraGuard®. This triple-action formula has three active fungicides that have a broad-base of protection against moisture, stains and decay caused by mold and mildew, as well as termite damage. The exterior of the wood windows are protected by Pella’s low-maintenance EnduraClad®, or EnduraClad® Plus, aluminum cladding system. We maintain our high standard of energy efficiency with PVC weather stripping at the sides of sash, and full perimeter weather-stripping to reduce air infiltration. Pella maintains its high standards by taking the time to test virtually every vent unit for air infiltration, so you know you’re getting a quality product.

ProLine® - Basic done beautifully®

Pella® ProLine® offers a beautiful collection of windows and patio doors with our most popular choices - including a wide range of standard sizes, shapes, styles and eight exterior cladding colors. And great features like prefinished white interiors and a variety of grille types and patterns. Best of all, they're low-maintenance and remarkably energy-efficient. ProLine products with Low-E insulating glass are ENERGY STAR® qualified. All this at a competitive price.

Energy Efficiency

Every ProLine® product with Low-E insulating glass meets ENERGY STAR® requirements for all 50 states.

Easy to Clean

A ProLine Casement sash moves toward the center of the frame a full 4”, wider than most competitors' standard casements, making it a breeze to clean exterior glass from inside your home.

Low Maintenance

Pella's EnduraClad® exteriors are beautifully durable, resist fading, chalking and corrosion to stay looking great for years to come.

Piece of Mind

Pella's patented SureLock® system reaches out to lift and pull the sash tight against the weatherstripping to form a tight seal.

Save time and money by choosing our factory-prefinished White interior. This durable interior finish will look beautiful for years to come! Or, select our standard unfinished wood interior that may be painted or stained to match any décor.