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6+12Ar+6/6+16Ar+6 Low-E curtain wall glass – the global standard double silver low-emissivity insulated glass unit for commercial curtain walls. 6mm tempered outer lite + 16mm argon cavity + 6mm tempered inner lite. Double silver Low-E coating on #2 or #3 surface. U-value ~1.4 W/m²K, SHGC 0.25–0.35, VLT 50–65%. Jumbo size up to 5330×13000mm. EN 2496, ASTM C2496, IGCC certified. Request FOB quote.
6+16Ar+6 Low‑E Curtain Wall Glass | Double Silver Low‑E Insulated Glass for Commercial Facades
Double Silver Low‑E Insulated Glass – The Most Widely Specified Configuration for Commercial Curtain Walls Worldwide
6+16Ar+6 Low‑E curtain wall glass is the global benchmark configuration for commercial curtain wall facades. It consists of:
💡 Why 6+16Ar+6 dominates: According to industry procurement data, this single configuration accounts for an estimated 60% of all commercial curtain wall IGU orders. Its 16mm cavity provides measurably better U‑value and acoustic performance than 12mm alternatives, while keeping weight and cost manageable. For procurement managers, specifying 6+16Ar+6 double silver Low‑E is the safest, most proven path to energy code compliance.
| Item | Specification |
|---|---|
| Configuration | 6+16Ar+6 |
| Overall Thickness | 28mm |
| Outer Lite | 6mm Tempered / Heat‑Strengthened |
| Inner Lite | 6mm Tempered / Heat‑Strengthened |
| Coating | Double Silver Soft‑Coat Low‑E (MSVD) |
| Coating Surface | #2 (cold climate) or #3 (hot climate) |
| Cavity | 16mm sealed |
| Gas Fill | Argon ≥90% |
| Spacer | Warm Edge TPE / Swisspacer / Aluminum |
| Seal | Dual seal: PIB primary + Polysulfide/Silicone secondary |
| Desiccant | Molecular sieve ≥2800 mg/g |
| Parameter | Double Silver (Balanced) | Double Silver (Solar Control) |
|---|---|---|
| U‑Value | ~1.4 W/m²K | ~1.4 W/m²K |
| SHGC | 0.30–0.35 | 0.22–0.27 |
| VLT | 55–65% | 41–50% |
| g‑value | 0.30–0.35 | 0.22–0.27 |
| UV Blockage | 90–95% | 90–95% |
| Acoustic (Rw) | ~33 dB | ~33 dB |
| Max Size | 3330 × 10500 mm | 3330 × 10100 mm |
The 16mm argon cavity combined with double silver Low‑E coating achieves a center‑of‑glass U‑value of ~1.4 W/m²K — comfortably meeting ASHRAE 90.1‑2022 and Title 24‑2025 requirements for commercial facades. The double silver coating reflects long‑wave infrared heat back into the building (cold climates) or keeps exterior heat out (hot climates), depending on coating placement.
With SHGC ranging from 0.22 to 0.35 (depending on coating variant), 6+16Ar+6 double silver Low‑E effectively manages solar heat gain. For west‑facing or south‑facing elevations in hot climates, the solar control variant (SHGC 0.22–0.27) reduces cooling load by up to 40% compared to uncoated double glazing.
VLT of 50–65% (balanced variant) provides abundant natural daylight while controlling glare. This improves occupant comfort, productivity, and well‑being — a key consideration for LEED, WELL, and BREEAM certified projects.
Both panes are fully tempered, providing impact resistance and meeting safety glazing codes (ANSI Z97.1, CPSC 16 CFR 1201). The dual‑seal IGU construction with warm‑edge spacer ensures 30+ year service life with minimal condensation risk.
Rw ~33 dB provides effective noise reduction for urban commercial environments. For higher acoustic requirements, one or both panes can be upgraded to laminated glass (see Laminated Insulated Curtain Wall Glass).
Our jumbo IGU capability extends 6+16Ar+6 to 3330 × 11500 mm — enabling fewer facade joints, reduced mullion costs, and cleaner architectural lines.
6+16Ar+6 double silver Low‑E is the standard specification for vision glass in commercial curtain walls. The high VLT (55–65%) provides daylight and view, while the low SHGC (0.30–0.35) controls solar heat gain.
Recommended specification:
For spandrel zones, the same 6+16Ar+6 Low‑E IGU is used with ceramic frit applied to the inner surface of the outer lite. This creates opacity while maintaining the same thermal performance as the vision glass.
Spandrel specification additions:
✅ Best practice: Using the same 6+16Ar+6 Low‑E IGU for both vision and spandrel zones ensures consistent U‑value, SHGC, and facade appearance. Only the frit differs.
Our jumbo production capability allows 6+16Ar+6 Low‑E IGU to be manufactured in sizes far exceeding industry standards.
| Parameter | Standard | Jumbo |
|---|---|---|
| Max Width | ≤2400 mm | ≤3330 mm |
| Max Height | ≤6000 mm | ≤11500 mm (extreme up to 17000 mm) |
| Max Area | ~14 m² | ~38 m² |
| Glass Thickness | 6mm | 6mm (both lites) |
| Wind Load Capacity | Up to 2.5 kPa | Up to 4.0 kPa (with proper frame design) |
| Coating Variant | Gas | Price Range (USD/m²) |
|---|---|---|
| Double Silver (balanced) | Argon | $30–44 |
| Double Silver (solar control) | Argon | $32–46 |
| Triple Silver (balanced) | Argon | $38–52 |
| Triple Silver (ultra‑low SHGC) | Argon | $40–56 |
| Factor | Impact |
|---|---|
| Coating variant | Solar control +5–10% vs. balanced |
| Gas fill | Krypton +15–25% vs. argon |
| Spacer type | Warm‑edge +5–10% vs. aluminum |
| Tempering | Included in base price |
| Laminating (one or both panes) | +$15–40/m² |
| Ceramic frit (spandrel) | +$8–15/m² |
| Quantity | FCL pricing available |
| Destination port | Affects logistics cost |
Submit your project requirements for a competitive FOB quotation and performance analysis.
Required Information:
Q1: What is 6+16Ar+6 Low‑E curtain wall glass?
It is a double‑glazed insulating glass unit with 6mm tempered outer and inner panes, a 16mm argon‑filled cavity, and a double silver soft‑coat Low‑E coating. It is the most common specification for commercial curtain walls.
Q2: What U‑value does 6+16Ar+6 achieve?
Approximately 1.4 W/m²K center‑of‑glass with double silver Low‑E and argon fill. With triple silver, it reaches ~1.2 W/m²K.
Q3: What SHGC can I expect?
Balanced variant: 0.30–0.35. Solar control variant: 0.22–0.27.
Q4: Which surface should the coating be on?
Q5: Can 6+16Ar+6 be used for spandrel glass?
Yes. Add ceramic frit to the outer lite for opacity. The same IGU construction maintains consistent thermal performance.
Q6: What is the maximum size?
Up to 3330 × 11700 mm for standard 6mm panes. Larger sizes require engineering review.
Q7: What certifications do you provide?
ASTM E2590, EN 2679‑5, IGCC, CE, ISO 2681, CCC, SGS.
Q8: What is the lead time?
Standard sizes: 4–6 weeks. Jumbo sizes: 6–8 weeks.
Q9: Can I get a sample?
Yes. 300×300mm samples available upon request for color and coating evaluation.
Q10: How does 6+16Ar+6 compare to 6+12Ar+6?
The 16mm cavity improves U‑value by ~0.2 W/m²K and acoustic performance by ~2 dB, at a 5–10% cost premium. For commercial curtain walls, 6+16Ar+6 is the recommended choice.
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