Triple-Sputtered LowE glass

Our Triple-Sputtered LowE option is a high performance dual-paned glass system maintaining excellent thermal properties without sacrificing visibility.

U-Value performance rating : .27

Using the latest advancements in the glazing industry, Iron Lion Entries doors and windows meet all of the most recent International Energy Code requirements. Using the Sputter-Vacuum Deposition process, our LowE coatings are triple coated with Silver lining to offer the highest visibility and best solar control.

Available upgrades to LowE glass: 

  • Triple-glazed units
  • Impact glass units


Fluorocarbon Finish

Our “Fluorocarbon” finish is 80% more fade-resistant, impact-resistance, frost-resistant and UV degradation-resistant than powder coated finishes.

Using the most advanced painting system out of Europe, Iron Lion launched “fluorocarbon” technology in February of 2017. Created for use in the automotive, steel-roofing and marine industries, fluorocarbon is one of the longest lasting and most durable finishes for metal products.

This multi-stage paint system begins with a mica-iron primer followed by a zinc-rich primer, multi-coats of urethane paint, a brush-on faux finish (depending on color), and finished with multi-coats of a urethane clear coating for a final seal. There are 4 separate baking operations between each coating type to create the fluorocarbon bond.


Thermal break

A thermal break is a continuous barrier between the inside and outside metal of both the doors and frame (jamb) that prevents conductive thermal energy loss. Our optional fiberglass-reinforced polymer thermal break technology places Iron Lion in the upper echelon of quality and performance.

Using the finest Steel manufacturing technology from Switzerland, Iron Lion Entries is one of only a few steel/iron door companies in the US to have a true thermal-break option for our products. The non-metallic material is pressed into the middle of our door/window units completely separating the metal on the exterior side of the door from the metal on the interior side. This eliminates the transfer of temperatures, both hot and cold, from inside the house.  This is especially helpful in extreme cold-weather climates where standard steel and iron doors may face condensation issues.

While there are a few other steel door companies with thermal breaks, the actual material chosen has an enormous impact on the functionality and quality of the product as well.  The Iron Lion difference is not just in our ability to provide a thermal-break option; it is in our metallurgical and materials expertise as well. Because we’ve chosen the stronger fiberglass-reinforced polymer material, we are able to continue door/window construction using the thicker 12-gauge steel (30% thicker than 14-gauge).  Our customers don’t have to sacrifice quality and product strength when choosing this option of door construction.

Some of our competitors have chosen Polyamide nylon. Polyamide suffers from a significant reduction in strength, stiffness, elongation and toughness due to its susceptibility to water absorption. That material weakness has forced those competitors to dramatically reduce the thickness (down to 14 or 16 gauge) of steel in their door and jamb construction due to the loss in unit strength after product installation.