English
Professional 19mm tempered glass manufacturer. 19mm toughened glass is the ultra-heavy choice for landmark façades, bullet-resistant glazing, underwater viewing panels, and extreme-load structures — 4-5× stronger than annealed, ~47.5 kg/㎡. Max size 2440×8000mm (subject to furnace). EN 12150 / CE / ASTM C1048 / AS-NZS 2208 certified. Indicative FOB price USD 45-85/㎡.
19mm tempered glass, 19mm toughened glass, 19mm tempered glass for façades, 19mm jumbo tempered glass, 3/4 inch tempered glass
3/4" Ultra-Heavy Structural & Security Grade Safety Glass for Landmark Buildings, Bullet-Resistant Glazing & Extreme Load Applications
| Specification | Details |
|---|---|
| Glass Thickness | 19mm (3/4") |
| Glass Type | Fully Tempered / Heat-Strengthened (optional) |
| Maximum Size | 2440 × 8000 mm (furnace-dependent) |
| Processing | Cutting / Edging / Drilling / CNC / Lamination / IGU |
| Heat Soak Test | Mandatory recommendation (EN 14179) |
| Low-Iron | Available |
| Laminated | Available (PVB / SGP) — strongly recommended |
| IGU | Available |
| Certification | EN 12150 / CE / ASTM / AS-NZS |
| MOQ | Project-based |
| Price | Request Quote |
💡 19mm is the "ultimate structural" thickness in the tempered glass family — the point where glass becomes a genuine structural material capable of replacing concrete, steel, and stone in certain applications. It is specified for landmark buildings, security-sensitive facilities, underwater viewing tunnels, and any project demanding the highest levels of strength, stiffness, and ballistic resistance.
19mm Tempered Glass — also known as 19mm Toughened Glass or 3/4 Inch Tempered Glass — is an ultra-heavy structural safety glass produced by controlled thermal treatment. Quality 19mm float glass is heated to approximately 630-660℃ and then rapidly cooled with high-pressure, uniformly distributed air jets (rapid quenching). This creates a powerful surface compressive stress layer (≥ 110 MPa for fully tempered) while the interior retains compensating tensile stress, delivering 4 to 5 times higher impact and bending strength than ordinary annealed glass.
19mm's unique positioning is: "the thickness that redefines what glass can do." It sits above 15mm (heavy-duty structural) and represents the upper practical limit for conventional horizontal tempering furnaces. While 15mm is impressive for jumbo façades, 19mm is the specification for bullet-resistant glazing, aquarium windows, glass floors supporting pedestrian crowds, and structural glass fins carrying entire building loads. Its weight (~47.5 kg/㎡) and stiffness (10.6× that of 8mm) make it the undisputed heavyweight champion of architectural glass.
| Dimension | 10mm | 12mm | 15mm | 19mm | 25mm |
|---|---|---|---|---|---|
| Unit Weight | ~25 kg/㎡ | ~30 kg/㎡ | ~37.5 kg/㎡ | ~47.5 kg/㎡ | ~62.5 kg/㎡ |
| Bending Stiffness (vs 8mm) | 1.6× | 3.4× | 5.6× | 10.6× | 27.5× |
| Max Unsupported Span | Medium | Medium-Long | Long | Very Long | Extreme |
| Bullet Resistance (UL 752) | ❌ | ❌ | Level 1-2 | Level 3-4 | Level 4+ |
| Underwater Viewing Panel | ❌ | ❌ | △ | ✅⭐ | ✅ |
| Glass Floor (High Traffic) | ❌ | ✅ | ✅⭐ | ✅⭐ | ✅ |
| Structural Glass Fin | ❌ | △ | ✅ | ✅⭐ | ✅ |
| Blast-Resistant Glazing | ❌ | △ | ✅ | ✅⭐ | ✅ |
| Landmark Façade (≥ 8m) | ❌ | △ | ✅ | ✅⭐ | ✅ |
| Aquarium / Zoo Exhibit | ❌ | ❌ | △ | ✅⭐ | ✅ |
✅⭐ = First-choice | ✅ = Suitable | △ = Usable but not optimal | ❌ = Not recommended
| Parameter | Specification |
|---|---|
| Nominal Thickness | 19mm (3/4") |
| Glass Type | Fully Tempered / Heat-Strengthened (optional) |
| Glass Substrate | Clear / Low-Iron / Tinted (Grey/Bronze/Blue/Green) / Coated / Reflective |
| Maximum Size | 2440 × 8000 mm (furnace-dependent; confirm with factory) |
| Minimum Size | 400 × 400 mm |
| Thickness Tolerance | ± 0.3mm |
| Dimension Tolerance | ± 0.05 - 0.1mm |
| Surface Compressive Stress | ≥ 105 MPa (fully tempered) / 40-70 MPa (heat-strengthened) |
| Bending Strength | ≥ 185 MPa (fully tempered, 4-5× annealed) |
| Steel Ball Impact (5mm) | 4540g steel ball @ 3m height — no break (EN 356 P2A) |
| Bullet Resistance | UL 752 Level 3-4 (when laminated) |
| Fragment Count | 40-60 pieces / 50×50mm |
| Thermal Shock ΔT | ≥ 240℃ |
| Light Transmittance (Clear 19mm) | ≥ 86% |
| Light Transmittance (Ultra-Clear 19mm) | ≥ 88% |
| U-Value (Monolithic) | 5.1 W/m²K |
| Sound Insulation Rw | 36(-2;-3) dB |
| Weight | ~47.5 kg/㎡ |
| Edgework | Flat Polish / Arrissed / Beveled / Pencil Edge / Seamed Edge |
| Hole Drilling | Available (edge distance ≥ 38mm) |
| Cut-outs / CNC | Available (limited due to thickness) |
| Heat Soak Test (HST) | Mandatory recommendation (EN 14179) |
| Laminating | Available (PVB / SGP) — strongly recommended for all structural uses |
| Insulating Glass (IGU) | Available (single / dual cavity, argon-filled) |
| Low-E Coating | Available |
| Ceramic Digital Printing | Available (limited due to furnace constraints) |
| Packing | Custom heavy-duty crates with spreader bars |
This is one of the most-searched long-tail queries from procurement managers. The unit weight of 19mm glass is approximately:
| Glass Area | Approx. Weight |
|---|---|
| 1 m² | ~47.5 kg |
| 2 m² | ~95 kg |
| 5 m² | ~237.5 kg |
| 10 m² | ~475 kg |
| Single panel 1600×3500mm (5.6 m²) | ~266 kg |
💡 19mm is 137.5% heavier than 8mm, but delivers 10.6× the bending stiffness. In landmark projects, this weight is a design parameter — it requires reinforced substructures, mechanical lifting equipment, and specialized handling procedures. We provide comprehensive weight and handling documentation with every quotation.
Maximum Size: Typically 2440 × 8000 mm, subject to furnace capability. Not all manufacturers can produce 19mm jumbo panels — our horizontal tempering furnace with extended heating zones and high-capacity quench is specifically calibrated for 19mm production.
Due to the extreme weight and limited furnace capacity, 19mm jumbo panels require:
| Project Type | Typical Panel Size | Panel Count | Notes |
|---|---|---|---|
| Landmark HQ curtain wall | 1400 × 7000mm | 60+ | Low-Iron, SGP laminated |
| Aquarium viewing window | 3600 × 2700mm | 8 | 19mm+19mm laminated |
| Bank HQ bullet-resistant lobby | 1220 × 3050mm | 24 | UL 752 Level 3 |
| Museum glass floor | 1820 × 3650mm | 16 | 19mm+1.52mm SGP+19mm |
| Government blast-resistant façade | 1067 × 4267mm | 48 | Heat-soaked, ceramic frit |
⚠️ The "non-cuttable" nature of tempered glass means all fabrication must be completed before tempering. For 19mm glass, processing requires industrial-scale machinery and extended cycle times.
Per the principle that each thickness page must have its own Search Intent + Application Intent + Procurement Intent, 19mm's unique positioning is "Ultra-Heavy Structural & Security Grade — the thickness for landmark strength and absolute safety."
19mm tempered glass, when properly laminated with multiple plies of glass and polycarbonate, achieves UL 752 Level 3-4 ballistic resistance — stopping handgun rounds (9mm, .44 Magnum) and some rifle threats. It is the standard for bank teller windows, embassy guard booths, VIP reception areas, and government facilities.
Aquarium windows must withstand immense hydrostatic pressure while maintaining optical clarity. 19mm tempered glass — often used in multi-laminate construction (e.g., 19mm+SGP+19mm) — is the standard for medium-depth aquarium exhibits (up to 6m water depth).
For glass floors supporting pedestrian crowds, exhibition displays, or vehicle traffic (light service vehicles), 19mm laminated with SGP is the gold standard. A 19mm+SGP+19mm assembly can support uniform loads exceeding 10 kN/㎡.
When a building's glass fins must span 12m+ without intermediate support, 19mm tempered glass laminated with SGP provides the necessary stiffness and redundancy. Used in flagship Apple Stores, airport terminals, and museum atriums.
Government buildings, embassies, and critical infrastructure require glazing that survives explosive blasts. 19mm tempered glass laminated with SGP and sometimes polycarbonate is tested to GSA/ISC standards.
For flagship stores, hotel towers, and corporate headquarters seeking the ultimate in glass façade expression, 19mm allows panels up to 8m tall with minimal deflection.
Similar to aquariums, large commercial pools with underwater viewing rooms use 19mm laminated tempered glass.
| Application | 15mm | 19mm | 25mm |
|---|---|---|---|
| Bullet-resistant (UL 752 L3) | △ | ✅⭐ | ✅ |
| Underwater viewing (≤ 6m depth) | △ | ✅⭐ | ✅ |
| Glass floor (extreme load) | ✅ | ✅⭐ | ✅ |
| Structural fin (12m+ span) | ✅ | ✅⭐ | ✅ |
| Blast-resistant glazing | ✅ | ✅⭐ | ✅ |
| Landmark façade (8m+) | ✅ | ✅⭐ | ✅ |
| Security lobby (embassy) | △ | ✅⭐ | ✅ |
| Aquarium main window | ❌ | ✅⭐ | ✅ |
✅⭐ = First-choice | ✅ = Suitable | △ = Usable but not optimal | ❌ = Not recommended
Only list certifications you actually hold. Do not inflate for SEO.
| Test Item | Method | Standard |
|---|---|---|
| Surface Compressive Stress | Stress meter | ≥ 105 MPa (fully tempered) |
| Fragment Pattern | 50×50mm fragment count | 40-60 pcs, no large shards |
| Flatness | Laser profilometer | ≤ 0.08mm/m (jumbo panels) |
| Optical Distortion | Optical scanner | Class 1 (min. visible distortion) |
| Dimensional Accuracy | CNC digital caliper | ± 0.1mm |
| Edge Quality | Visual + magnifier | No micro-cracks, no burrs |
| Light Transmittance | Spectrophotometer | ≥ 86% (Clear) |
| Ballistic Test (if applicable) | Live fire range | UL 752 / EN 1063 |
📄 Test reports available upon request. We provide real fragmentation test photos, stress test reports, HST temperature curves, and ballistic test certificates (where applicable) for your verification.
Glass pricing is heavily influenced by size, quantity, substrate, Low-E, Low-Iron, processing, drilling, packing, port, Incoterms, and destination. A single fixed price is misleading.
USD 65 - 130 / ㎡ (100 ㎡ MOQ, Clear 19mm, standard edgework, HST included)
| Thickness | Indicative FOB (USD/㎡) | Positioning |
|---|---|---|
| 10mm | 17 - 28 | Premium balustrades / large showers |
| 12mm | 21 - 32 | Structural / commercial façade |
| 15mm | 26 - 46 | Jumbo façade / heavy-duty structural |
| 19mm | 65 - 155 | Ultra-heavy structural / security / underwater |
| 25mm | 130 - 300 | Extreme load / military / nuclear |
| Factor | Impact |
|---|---|
| Glass size | Very High (larger panels reduce yield) |
| Order quantity | High |
| Glass type (Clear / Ultra-Clear / Tinted) | High |
| Processing complexity (holes, cutouts, shapes) | High |
| Low-Iron / Low-E | High |
| Lamination (PVB/SGP) | Very High |
| HST required | Medium |
| Certification requirements (UL, EN 1063) | Very High |
| Packaging method | High |
| Destination port | High |
💡 Send us your project drawings and we will provide a precise quotation within 3 business days. Due to the complexity of 19mm projects, we may request a technical call to clarify specifications.
A:
A: Not alone. Monolithic 19mm tempered glass will shatter under ballistic impact. However, when laminated with multiple plies of glass and polycarbonate using SGP interlayers, the assembly can achieve UL 752 Level 3-4 (stopping .44 Magnum and some rifle rounds). The 19mm tempered component provides the primary structural strength; the laminate layers absorb and disperse the projectile's energy.
A: 19mm glass weighs approximately 47.5 kg/㎡. A 2m × 3m panel (6 ㎡) weighs about 285 kg. This requires mechanical lifting equipment for installation. We provide detailed weight calculations and handling recommendations with every quotation.
A: Typically 2440 × 8000 mm, but this depends on the specific tempering furnace. Not all factories can produce 19mm jumbo panels. Please confirm with our team before specifying. Smaller sizes (≤ 3660 × 2440 mm) are more readily available.
A: Absolutely mandatory. The consequences of spontaneous breakage in a 19mm panel are severe — the panel weighs hundreds of kilograms and could cause catastrophic damage or injury. HST (EN 14179) reduces the field breakage rate from 0.3% to < 0.1%. We include HST as standard for all 19mm structural orders.
A: Yes — and it is the industry standard for medium-depth exhibits (up to 6m water depth). The typical construction is 19mm tempered + SGP + 19mm tempered (total 42mm), designed to withstand hydrostatic pressure with a safety factor of 4-5×. Deeper exhibits may require 25mm or thicker laminates.
A: Clear 19mm tempered glass offers ≥ 86% light transmittance; with an Ultra-Clear (Low-Iron) substrate, transmittance reaches ≥ 88%. The green edge tint is more pronounced in 19mm due to the increased iron content path length — Low-Iron is highly recommended for applications where color neutrality matters (aquariums, showrooms).
A: Yes — and lamination is strongly recommended for all structural and security applications. 19mm+SGP+19mm is the standard for glass floors, underwater windows, and bullet-resistant assemblies. IGU with 19mm outer lite is possible but requires careful thermal stress analysis.
A: Standard MOQ is 50 ㎡ (approximately 3-5 crates, depending on panel size). Lead time is 35-50 days standard; longer for ballistic or underwater laminates (may require third-party testing). Please send your drawings for a precise quotation.
A: Due to the complexity and cost of 19mm projects, we recommend a technical consultation. Please provide:
Browse our tempered glass series:
7 .19mm Ultra-Clear Structural Tempered Glass – Ultra-heavy structural
8. 22mm Tempered Glass for Extreme Loads – Extreme structural
9. 25mm Jumbo Tempered Glass for Heavy Loads – Military / nuclear grade
10. Heat Soaked Tempered Glass (5mm-25mm) – HST certified supplier
Please provide the following information to receive a quotation:
| Field | Description |
|---|---|
| Project / Company | Project name & company |
| Country | Destination country |
| Required Quantity | Area required (㎡) |
| Glass Size | Per-panel dimensions (W × H) |
| Glass Type | Clear / Ultra-Clear / Tinted |
| Edgework | Edge treatment requirements |
| Holes / Cut-outs | Hole & cutout requirements |
| HST Required? | Heat Soak Test needed? |
| Certification | Required standards |
| Target Delivery Date | Desired lead time |
| Contact email | |
| Upload Drawing | Upload drawing (PDF/DWG/CAD) ⭐ |
📧 Upload your drawings for a precise quote: tomron1688@gmail.com
🌐 Website: www.jumbotemperedglass.com
With over 20 years of experience and expertise in glass manufacturing and processing, we are seasoned glass specialists, ready to answer your questions and provide guidance on product selection, installation, and maintenance.
