Mercury Excellum Inc.
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Bay and Bow Windows

An elegant, gently arched bow window or an angle bay window from Mercury Excelum can make your home feel bigger and brighter. Our Bay or Bow windows can be used to replace existing bow or bay windows or can be installed in most other large window openings. The expanded viewing area lets in more light and gives your entire home the look and feel of added space and elegance.

Features and Options

  • Multi-chambered frame and sash construction provide ultimate energy efficiency
  • Insulating glass reduces outside noise and delivers excellent thermal performance
  • Fusion welded sash and frame corners provide increased strength, durability, structural integrity and leak-free performance
  • Advanced weather stripping assures a long-lasting weather-tight seal
  • Quality hardware insures a lifetime of trouble-free operation
  • Optional cable support
  • Optional knee brackets
  • Optional insulated seat board
  • Optional lighting
  • Optional interior casing and roof system
  • Optional LowE
  • Optional high performance glazing options
For a detail cut away of our bay and bow construction click here.


Enegry StarMercury Excelum, Inc, is proud to offer our customers products with the ENERGY STAR label.
Qualified Contractors
State of the art spacer technology offers superior window performance

Envirosealed Windows Advantage is an extension of Truseal’s award-winning Envirosealed Windows™ program. Envirosealed Windows™ have the most energy-efficient spacer as measured by their u-value and edge of glass temperatures. With Envirosealed Windows Advantage you build a window with the most energy-efficient spacer, glass pack and frame to produce the best thermal performance and most energy efficient window on the market with an R5 rating!

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