Insulating Glass

Related Resources
  • Curtain Walls

  • Window Walls

  • Storefronts

  • Point Supported Glass Wall Systems

  • Skylights

  • Overhead Glazing

  • Ribbon Windows

  • Windows

  • Non Vision Spandrel

JEB Winduo™ Insulating Glass Units

JE Berkowitz's Winduo™ Insulating Glass Units are two or more lites of glass separated and hermetically sealed to form a single-glazed unit with an air space between each lite (commonly called IG units). Winduo ™Insulating Glass Units conform to the highest level of the ASTM E2190 specifications.


Fabrication of Insulating Glass Units is accomplished on three automatic vertical insulating lines with the distinct advantages of:

  • On-line edge deletion to ensure proper sealant adhesion

  • On-line argon gas filling

  • Grey and Black primary and secondary sealants

  • Warm edge technology airspacers

  • Standard clear and black airspacers

Recommended Sizing

(Based on glass thickness)

3/16" Annealed Glass

60" x 96"

3/16" Tempered Glass

70" x 120"

1/4" Annealed Glass

65" x 110"

1/4" Tempered Glass

96" x 157"

1/4" Laminated Annealed

36" x 60"

3/8" Laminated Annealed


70" x 120"

9/16" Heat-Treated Laminated


84" x 144"


Minimum Size Units

12" x 12"

Maximum Size Units

96" x 157"

(*Consult JEB for applicable maximum glass sizes)