Vitro Architectural Glass

Excellent Insulating Performance. Exceptionally Clear.

Sungate® 400 glass is a highly transparent, passive low-e glass designed specifically for use in heating-dominated climates.

Reduce Winter Heating Costs

Manufactured with a magnetron sputtered vacuum deposition (MSVD) “soft coat,” Sungate® 400 glass helps buildings harvest energy from the sun and retain solar and furnace heat to reduce winter heating costs. Sungate® 400 delivers a winter U-value that is 9 percent higher than passive low‑e glasses manufactured with a “hard” pyrolytic coating.

Sungate® 400 glass performs best when specified as a third-surface coating on Starphire® glass. In a one-inch insulating glass unit (IGU), this configuration generates a solar heat gain coefficient (SHGC) that is 13 percent better than that of conventional clear glass in a third-surface configuration. Sungate® 400 glass also has been engineered to work with Solarban® 70 glass (formerly Solarban® 70XL glass) and Solarban® 60 glasses to optimize performance in triple-pane IGUs.

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Aesthetics & Performance


  • Looks
  • Exceptionally clear
  • Reflectivity
  • Low

Performance Data Comparisons

Featured Configurations VLT SHGC
Clear Glass + Clear

Clear Glass + Clear

79 0.70
Sungate 400 (2) Clear + Clear

Sungate® 400 (2) Clear + Clear

76 0.60
Starphire + Sungate 400 (3) Starphire

Starphire® + Sungate® 400 (3) Starphire®

80 0.73
Solexia + Sungate 400 (3) Clear

Solexia® + Sungate® 400 (3) Clear

66 0.44

Colors are reproductions and are for descriptive purposes only.

Substrate Options

Clear Low-Iron Tinted

Advanced Applications

VacuMax™ VIG Solarvolt™ BIPV Glass System Oversized Glass (130″ x 204″) & Titan (130″ x 240″)

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Spec Tools and Downloads


Browse & Compare Performance Data

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Product Data Sheet

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Long-Form Specification

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Short-Form Specification

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BIM Objects

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Inspiration & Evaluation

Tower at PNC Plaza - Sungate 400

The Tower at PNC Plaza

Sungate® 400 Starphire® Glass

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Starphire + Sungate 400 Sample

Sungate® 400 Starphire® Glass

4" x 6" Sample of Starphire® + Sungate® 400 (3) Starphire®

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