Performance when closed matters most
Large openings are easy to design and there are many options to choose from. When deciding on a product that's best for your project, performance when closed needs to be considered.
System Overview
cero [CE Certified, ISO 14001, ISO 9001]
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Visible Profile Width |
1 5/16″ (34 mm) All the Way Around with Recessed Frame |
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Flush Sill / Saddle Sill / |
ADA Wheelchair Compliant |
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Thermally Broken Higher Weather |
ADA Wheelchair Compliant with Optional Insert |
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Running Mechanism |
Floor Supported Technology |
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Daylight / Proportion of Glass |
98% |
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Insulated Glass Thickness |
1 3/16″ - 1 7/16″ (30 - 36 mm) for Double Glazed cero II 1 7/8″- 2 1/8″(48 - 54 mm) for Triple Glazed cero III |
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Maximum Panel Weight |
1,300 lbs.(600 kg) for cero II or 2,200 lbs.(1,000 kg) for cero III |
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Maximum Panel Size (Sliding or Fixed) |
7′ 4 1/2″ (W) x 13′ 1″ (H) (2250 mm x 4000 mm) for cero II 9′ 10″ (W) x 14′ 9″ (H) (3000 mm x 4500 mm) for cero III |
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System Testing |
Double Glazed—cero II with Higher Weather Performance Sill |
Double Glazed—cero II with Flush / Saddle / Hybrid Sill |
Triple Glazed—cero III with Higher Weather Performance Sill |
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Static Water Penetration (ASTM E-547 and E-331) 134 |
12 psf (600 Pa) | 8psf (400 Pa) 2 |
6 psf (300 Pa) | 4 psf (200 Pa) 2 |
12 psf (600 Pa) | 8 psf (400 Pa) 2 |
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Dynamic Water Penetration (AAMA 501) 13 |
12 psf (600 Pa) |
12 psf (600 Pa) |
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Air Infiltration | Exfiltration @ 1.57 psf (ASTM E-283) 124 |
0.09 cfm/ft2 | 0.08 cfm/ft2 | A3 |
0.16 cfm/ft² | 0.13 cfm/ft² | A2 |
0.05 cfm/ft² | 0.04 cfm/ft² | A3 |
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AAMA/WDMA/CSA 101/I.S.2/A440-08 and -11 |
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Standard Unit: |
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Standard Unit: |
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Reinforced Unit: |
Reinforced Unit: |
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Structural Load Deflection (ASTM E-330) 1234 See Design windload charts for other sizes Note that the structural test pressures were 50% higher than the design pressures |
Design Pressure |
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Standard Unit: |
Standard Unit: |
Standard Unit |
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Reinforced Unit: |
Reinforced Unit: |
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Florida Product Approval (non-impact) |
Cero II Standard - FL38028.1 Cero II Reinforced - FL38028.2 |
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FL35024.1 |
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Forced Entry (ASTM F-842) 134 |
Pass with optional RC2 |
Pass |
Pass with optional RC2 or RC3 |
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Cycle Testing (per DIN 1191/12400) |
40,000 |
40,000 |
40,000 |
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Acoustical Performance (ASTM E-90 and E-1332) 56 |
Tested with: STC 47 glass achieved STC (Rw) 43 and OITC 34 |
Tested with: STC 38 glass achieved unit |
Tested with: |
1 Excerpts of results of four panel unit size 22′ 4″ W x 9′ 10 ″ H (6800 mm x 3000 mm) with varying cross-sections by Architectural Testing Inc., Fresno, CA an AAMA accredited and certified independent testing laboratory in March 2017.
2 For Canada tested to NAFS-2011 and CSA A440-11.
3 Excerpts of results of four panel unit size 22′ 4″ W x 9′ 10 ″ H (6800 mm x 3000 mm) with varying cross-sections by Architectural Testing Inc., Fresno, CA an AAMA accredited and certified independent testing laboratory in May 2018.
4 Excerpts of results of two panel unit size 14′ W x 10′ H (4267 mm x 3048 mm) with varying cross-sections by Architectural Testing Inc., Fresno, CA an AAMA accredited and certified independent testing laboratory in May 2018.
5 Excerpts of results of two panel unit size 11′ 6″ W x 8′ 2″ H (3500 mm x 2500 mm) with varying cross-sections by SG Bauakustik, Muelheim an der Ruhr, an EN DIN ISO accredited and certified independent testing laboratory in August 2016.
6 Excerpts of results of two panel unit size 14′ W x 10′ H (4267 mm x 3048 mm) with varying cross-sections by Architectural Testing Inc., Lake Forest, CA an AAMA accredited and certified independent testing laboratory in May 2018.
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Thermal Performance |
cero III - Rated, certified and labeled in accordance with NFRC 100 + 200 |
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| cero III with Higher Weather Performance Sill | |||||||||
| Type of Glass (1 lite) | Center of Glass U-Factor | Unit U-Factor | SHGC 1 | VT 2 | 2015 Energy Star | ||||
| Triple IG Low E x 2 (argon filled) |
.12 | .29 | .25 | .47 | * | ||||
| Triple IG Low E x 2 (air filled) | .15 | .31 | .25 | .47 | - | ||||
| Triple IG Higher SHGC Low E x 2 (argon filled) |
.12 | .29 | .44 | .64 | * | ||||
| Triple IG Higher SHGC Low E x 2 (air filled) |
.15 | .32 | .44 | .64 | - | ||||
| Triple IG Lower SHGC Low E x 2 (argon filled) | .12 | .29 | .19 | .25 | * | ||||
| Triple IG Lower SHGC Low E x 2 (air filled) | .15 | .31 | .19 | .25 | - | ||||
| Notes | |||||||||
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1 SHGC = Solar Heat Gain Coefficient 2 VT = Visible Transmittance |
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* 2015 Energy Star Qualification Criteria: U-Factor for doors in all climate zones ≤.30, SHGC ≤.25 in South/South Central zones and ≤.40 in North/North Central zones. (For guidance only. NanaWall is not a participant of the Energy Star program.) |
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Shown above are thermal values for select glass options only. Thermal values for many other glass options are available. These may be able to meet specific requirements, such as Energy Star values for other zones, CA Title 24 prescriptive values, other state and local energy codes, etc. Thermal values for glass with other Low E coatings are available. Please contact NanaWall for more information. |
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Thermal Performance |
cero II - Rated, certified and labeled in accordance with NFRC 100 + 200 |
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| cero II with Higher Weather Performance Sill | cero ii with flush/saddle/hybrid sill | ||||||||
| Type of Glass (1 lite) | Center of Glass U-Factor | Unit U-Factor | SHGC 1 | VT 2 | 2015 Energy Star | Unit U-Factor | SHGC 1 | VT 2 | 2015 Energy Star |
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Double IG Low E (argon filled) |
.25 | .41 | .29 | .60 | - | .42 | .29 | .59 | - |
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Double IG Low E (air filled) |
.30 | .45 | .30 | .60 | - | .46 | .30 | .60 | - |
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Double IG Higher SHGC Low E (argon filled) |
.25 | .42 | .53 | .69 | - | .43 | .52 | .60 | - |
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Double IG Higher SHGC Low E (air filled) |
.29 | .46 | .53 | .69 | - | .47 | .52 | .60 | - |
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Double IG Lower SHGC Low E (argon filled) |
.25 | .42 | .22 | .43 | - | .42 | .22 | .43 | - |
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Double IG Lower SHGC Low E (air filled) |
.30 | .45 | .23 | .43 | - | .46 | .23 | .43 | - |
| Notes | |||||||||
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1 SHGC = Solar Heat Gain Coefficient 2 VT = Visible Transmittance |
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Shown above are thermal values for select glass options only. Thermal values for many other glass options are available. These may be able to meet specific requirements, such as Energy Star values for other zones, CA Title 24 prescriptive values, other state and local energy codes, etc. Thermal values for glass with other Low E coatings are available. Please contact NanaWall for more information. |
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