Sierra Pacific Brands offer the highest quality windows

Sierra Pacific is an industry leader in technological advances. We use state of the art computerized scanning equipment to assure we are getting the highest yields from our raw materials. Whether in our sawmills or millwork plants, innovative equipment run by highly-skilled operators ensures that we utilize all available wood fiber.

High quality brands for replacement windows in Billings

World-Class Windows and Glass Alpen HPP fiberglass windows and doors use advanced, customized suspended coated film glazing to deliver windows with performances equal to and greater than performances of triple- and quad-pane windows. Explore our exceptional product lines by Performance Series or by Style.

Billings windows and doors

The H3 is Sierra Pacific’s mid-priced window, and one of the best brands out there. Recently named “The most innovative window of the year.” It features advanced energy efficiency and superior quality. With its inventive Fusion Technology™, the H3 integrates three components, (extruded aluminum, vinyl, and solid wood) into one perfect window

Professional Grade Doors in Billings Montana

Professional Grade Doors – We set out on a journey to develop a new fiberglass entry door and it expanded into a complete philosophy of creating unrivaled efficiency in home building products. We call this new way of thinking enVision. The first creation using the enVision philosophy is Embarq – the doorway to innovation and energy efficiency.

Velux Brands

Velux Skylights



Here at 406 Window Co. in Billings, MT, we carry many of the major brands of windows and doors.  Our showroom features a number of these, but there are others that don’t quite fit in our modest space.  What separates us from other Billings windows and door companies is our commitment to carrying top-of-the-line products that will enhance the beauty of your home, and ensure that your house is energy efficient.

Are you ready to get better windows in your home?  Call us at 406-656-9091.