4mm Insulglass Soft-Coat Low-E PLUS Safety Toughened Glass/12mm Argon Gas/ 4mm Safety Toughened Glass
1.4 U-Value
6.38 Laminated Security Glass/10mm Argon Gas/ 4mm Insulglass Soft-Coat Low-E PLUS Safety Toughened/ large 40mm air-gap /10mm Sound Reduction Plexiglass attached with 18mm-wide magnetic seals
1.4 U-value or better
6.38mm Laminated Security Glass/ 10mm Argon Gas/4mm Insulglass Soft-Coat Low-E PLUS Safety Toughened Glass
1.4 U-value