Superior performance, Functionality, and Design. 

ARG & Company has partnered with Window and Door Manufacturers that prove performance is elegance. Our wide range of windows (double-hung, casement, tilt and turn, and more) and doors (swinging, sliding, folding, and more) have been featured in residential spaces, hospitality, and even the Empire State Building. To test the functionality for yourself, please visit our showroom

Tradition, quality engineering and luxury windows and doors. HF's focus on tradition, quality engineering and energy efficiency is coupled with their core values of sustainability and green manufacturing. This creates a unique comprehensive range of windows and doors that bestow ultimate luxury and comfort for the discerning customer.

What makes Harman Fensterbau unique? 

  • Windows custom built to fit your budget and design. 
  • Convert to the future – outstanding insulation characteristics which clearly-maximize their energy saving capability convert to the future.

Further product information. 


Their mission? To manufacture highly versatile window, glass and door solutions that meet the energy efficiency needs of a changing world, and improve the comfort and durability of the buildings in which we live and work. Alpen’s core product offerings draws on a 30-year history of industry leadership in advanced, high performance fiberglass and UPVC windows and Heat Mirror IGU glass manufacturing and innovation. 

What makes Alpen unique? 

  • Advanced triple-pane, suspended-film glazing technology stabilizes interior glass surface temperature. 
  • NFRC Certified thermal performance ranging from R-6.7 to R-10

Further product information. 

Practical Performance 

Meet Alpen 

Recent Projects