Our Way of Thinking

406 Window Co. set out on a journey to find a new and better fiberglass entry door.

Our journey ended at ProVia.  ProVia Manufactures these front doors at their plant in Sugarcreek, OH.


As they explain on their site: ProVia devolped a 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.

Envison by ProVia



Front doors and entry doors in Billings

Embarq is the most energy-efficient entry door system in the U.S. market, engineered and produced by the only door company to win the ENERGY STAR Partner of the Year Award for Door Manufacturing. This innovative fiberglass entry door provides a U-factor of 0.10 — the lowest recorded heat conduction measurement for entry doors in the U.S.

In addition to being energy-efficient, the Embarq fiberglass entry door is durable and beautiful, available in a number of styles, finishes, glass options and custom sizes.


2.5" Thick Front Door for yellowstone county

We thickened the fiberglass door by 43% to allow for more insulation.


Dual Perimeter Seal on your entry door in Billings

Seals on the door and frame make the door more energy efficient.


Custom Bottom Sweep to keep out the cold in Montana

Keeps out unwanted elements and uncomfortable temperatures.


2.5" Thick Front door for your Billings home

Insulation channels in the side rails and header maximizes insulating power.