Low-E Triple-Pane IGU — Argon-Filled Insulated Glass Unit
Low-E Triple-Pane IGU — Argon-Filled Insulated Glass Unit
Low-E Triple-Pane IGU — Argon-Filled Insulated Glass Unit
This factory-fabricated triple-pane insulated glass unit (IGU) is engineered specifically for Blomberg T450N and T600N thermally-broken window-wall systems, combining two high-performance Low-E coatings (Solarban 70XL or equivalent) on surfaces #2 and #5 with argon-filled air spaces to deliver a center-of-glass U-factor of 0.10 and a whole-unit NFRC U-factor of 0.16 in the Blomberg frame — the best thermal performance available in any aluminum fenestration system.
The unit uses a warm-edge spacer bar for reduced condensation at the sightline, achieves an STC rating of 37 and OITC of 31 for meaningful acoustic attenuation in urban and high-exposure environments, and is available in custom dimensions up to 96" × 144" to accommodate large-format architectural glazing in high-rise, institutional, and luxury residential applications.
In a Passive House-certified Seattle residence on a cold rainy morning, the interior glass surface stays dry, warm, and condensation-free — because the physics of three panes and two argon fills simply don't allow otherwise.
Studio View — Isometric Exploded Cross-Section with Low-E Coating Labels
Isometric exploded cross-section of the triple-pane IGU, clearly labeling the two Low-E coating positions on surfaces #2 and #5, the argon gas fill spaces, the warm-edge spacer bars, and the overall stack thickness. The engineering that delivers U-0.10 center-of-glass performance, made visible.
Installed Performance — Passive House Seattle Residence, Cold Rainy Morning
The triple-pane IGU installed in a T450N window-wall in a Passive House-certified Seattle residence. Outside: cold, grey, and raining. Inside: the glass is dry, the reading nook is warm, and the condensation that would form on a double-pane unit simply doesn't exist. This is what U-0.16 whole-unit performance feels like from the inside.
Warm-Edge Spacer Bar Detail — Dual-Seal and Argon Fill Port
The warm-edge spacer bar at the glass edge, magnified to show the dual-seal system: primary butyl sealant line and secondary structural sealant line, with the argon gas fill port visible on the spacer body. The warm-edge spacer reduces the thermal bridge at the glass edge, minimizing condensation at the sightline and improving whole-unit U-factor performance.
Specifications
| Parameter | Value |
|---|---|
| Pane Count | 3 (triple-pane) |
| Low-E Coating Positions | Surfaces #2 and #5 (Solarban 70XL or equivalent) |
| Gas Fill | Argon (both air spaces) |
| Center-of-Glass U-Factor | 0.10 BTU/hr·ft²°F |
| Whole-Unit U-Factor (NFRC) | 0.16 BTU/hr·ft²°F (in Blomberg T450N / T600N frame) |
| STC Rating | 37 |
| OITC Rating | 31 |
| Max Custom Size | 96" × 144" (2,438 mm × 3,658 mm) |
Spacer Type: Warm-edge (reduced condensation at sightline) | Sealant System: Dual-seal — primary butyl + secondary structural | Frame Compatibility: Blomberg T450N and T600N thermally-broken systems | Certification: NFRC 100; Passive House compatible