For more information, please visit the product page. date 12/11/2017 page 1 of 15 SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN FEATURES • • • • • omniCOOLTM bearing system 60 x 60 mm frame multiple speed options for different cooling needs tachometer signal and rotation detect options available auto restart protection standard on all models MODEL input voltage input current1 input power1 rated speed1 air flow2 static pressure3 noise4 rated (Vdc) range (Vdc) max (mA) max (W) typ (RPM±15%) (CFM) (inch H2O) max (dBA) CFM-6010V-130-205 12 6~13.8 56 0.68 3000 12.2 0.08 20.5 CFM-6010V-135-250 12 4.5~13.8 87 1.05 3500 14.3 0.10 25.0 CFM-6010V-140-285 12 4.5~13.8 125 1.50 4000 16.3 0.12 28.5 CFM-6015V-122-145 12 4.5~13.8 29 0.35 2200 12.7 0.04 14.5 CFM-6015V-130-213 12 4.5~13.8 58 0.70 3000 17.6 0.12 21.3 CFM-6015V-139-292 12 4.5~13.8 79 0.95 3900 22.8 0.14 29.2 CFM-6015V-147-342 12 4.5~13.8 147 1.77 4700 26.4 0.18 34.2 CFM-6015V-154-362 12 4.5~13.8 213 2.56 5400 30.4 0.22 36.2 CFM-6015V-239-292 24 8~27.6 48 1.16 3900 22.8 0.14 29.2 CFM-6015V-247-342 24 8~27.6 87 2.09 4700 26.4 0.18 34.2 CFM-6015V-254-362 24 8~27.6 98 2.36 5400 30.4 0.22 36.2 CFM-6020V-131-210 12 4.5~13.8 48 0.58 3100 16.5 0.10 21.0 CFM-6020V-142-280 12 4.5~13.8 75 0.90 4200 19.0 0.16 28.0 CFM-6020V-150-335 12 4.5~13.8 115 1.38 5000 23.0 0.21 33.5 CFM-6020V-157-390 12 4.5~13.8 164 1.97 5700 25.5 0.27 39.0 CFM-6020V-230-230 24 8~27.6 29 0.70 3100 16.5 0.10 21.0 CFM-6020V-237-280 24 8~27.6 42 1.01 4200 19.0 0.16 28.0 CFM-6020V-245-335 24 8~27.6 87 2.09 5700 25.5 0.27 39.0 CFM-6025V-125-107 12 4.5~13.8 26 0.32 2500 13.8 0.06 10.7 CFM-6025V-131-167 12 4.5~13.8 53 0.64 3100 16.0 0.10 16.7 CFM-6025V-138-220 12 4.5~13.8 83 1.00 3800 19.3 0.15 22.0 CFM-6025V-145-270 12 4.5~13.8 87 1.05 4500 23.5 0.21 27.0 CFM-6025V-152-312 12 4.5~13.8 150 1.80 5200 27.0 0.31 31.2 CFM-6025V-231-167 24 8~27.6 28 0.68 3100 16.0 0.10 16.7 Notes: 1. 2. 3. 4. 5. At rated voltage, 25°C, 0 inch H20 static pressure, after 10 minutes As per AMCA 210 or DIN 24163, at rated voltage, stabilized RPM, 0 inch H20 static pressure As per AMCA 210 or DIN 24163, at rated voltage, stabilized RPM, 0 CFM airflow. Measured in a semi-anechoic chamber with background noise < 15 dBA at 1 m from the fan intake. All specifications are measured at 25°C, 65% relative humidity unless otherwise specified. cui.com For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN MODEL input voltage date 12/11/2017 │ page 2 of 15 input current1 input power1 rated speed1 air flow2 static pressure3 noise4 rated (Vdc) range (Vdc) max (mA) max (W) typ (RPM±15%) (CFM) (inch H2O) max (dBA) CFM-6025V-238-220 24 8~27.6 38 0.92 3800 19.3 0.15 22.0 CFM-6025V-245-270 24 8~27.6 58 1.40 4500 23.5 0.21 27.0 CFM-6025V-252-312 24 8~27.6 92 2.21 5200 27.0 0.31 31.2 Notes: 1. 2. 3. 4. 5. At rated voltage, 25°C, 0 inch H20 static pressure, after 10 minutes As per AMCA 210 or DIN 24163, at rated voltage, stabilized RPM, 0 inch H20 static pressure As per AMCA 210 or DIN 24163, at rated voltage, stabilized RPM, 0 CFM airflow. Measured in a semi-anechoic chamber with background noise < 15 dBA at 1 m from the fan intake. All specifications are measured at 25°C, 65% relative humidity unless otherwise specified. PART NUMBER KEY CFM-6010V-130-205 - XX - CXX Base Number Fan Signals “blank” = no signals 11 = rotation detector signal 20 = tachometer signal cui.com Reserved for Custom Configurations For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 3 of 15 INPUT parameter conditions/description min typ max units operating input voltage1 12 Vdc input models 24 Vdc input models 4.5 8 12 24 13.8 27.6 Vdc Vdc starting voltage2 12 Vdc input models 24 Vdc input models Note: 4.5 8 Vdc Vdc 1. See Model section on page 1 for specific input voltage ranges. 2. Starting voltage for model CFM-6010V-130-205 is 6 Vdc. PERFORMANCE3 parameter conditions/description min max units rated speed at rated voltage, 25°C, after 10 minutes 2200 5700 RPM air flow at 0 inch H2O, see performance curves 12.2 30.4 CFM static pressure at 0 CFM, see performance curves 0.04 0.31 inch H2O noise at 1 m 10.7 39.0 dBA Note: typ 3. See Model section on page 1 for specific values. PROTECTIONS / FEATURES4 parameter conditions/description auto restart on all models rotation detector signal available on “11” models tachometer signal available on “20” models Notes: min typ max units min typ max units 4. See Application Notes for details. SAFETY & COMPLIANCE parameter conditions/description insulation resistance of frame at 500 Vdc between internal stator and positive lead wire dielectric strength apply 500 Vac for 1 minute between housing and positive lead wire safety approvals UL/cUL 507, TUV (EN 60950-1) EMI/EMC EN 61000-6-1:2007, EN 61000-6-3:2007+A1 life expectancy at 40°C, 65% RH RoHS 2011/65/EU 10 MΩ 70,000 hours ENVIRONMENTAL parameter conditions/description min typ max units operating temperature -10 70 °C storage temperature -40 70 °C cui.com For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 4 of 15 PERFORMANCE CURVES CFM-6010V-130-205 CFM-6010V-135-250 Air Flow (CMM) 1.5 0.04 1 0.02 0 3 6 9 12 15 0 1.5 0.04 1 0.02 0.5 0 3 6 9 Air Flow (CFM) 12 15 0 CFM-6010V-122-145 0.228 0.342 Air Flow (CMM) 0.456 0.12 0 0.57 3 0.085 0.17 0.255 0.34 0.04 0.425 1 2 Static Pressure (inch H O) 2 2 Static Pressure (mm H O) 2.5 0.1 Static Pressure (inch H O) 0.42 2.5 0.06 Air Flow (CMM) 0.08 2 0.06 1.5 0.04 1 0.03 0.75 0.02 0.5 0.01 0.25 0.5 0.02 0 0.336 2 0 CFM-6010V-140-285 0.114 0.252 0.08 Air Flow (CFM) 0 0.168 0.1 0 4 8 12 Air Flow (CFM) 16 20 0 0 0 3 6 9 Air Flow (CFM) cui.com 12 15 0 2 0 0.5 0.084 2 0.06 0 Static Pressure (mm H O) 2 Static Pressure (inch H O) 0.08 0.42 2 2 0.336 Static Pressure (inch H O) 0.252 2 0.168 Static Pressure (mm H O) 0.084 Static Pressure (mm H O) Air Flow (CMM) 0 For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 5 of 15 PERFORMANCE CURVES (CONTINUED) CFM-6015V-130-213 CFM-6015V-139-292 Air Flow (CMM) 0.36 Air Flow (CMM) 0.48 0.6 0 0.14 0.42 0.56 0.7 0.15 4 0.096 2.44 0.12 3.2 0.072 1.83 0.09 2.4 0.048 1.22 0.06 1.6 0.024 0.61 0.03 0.8 0 4 8 12 Air Flow (CFM) 16 20 0 2 2 2 Static Pressure (inch H O) Static Pressure (mm H O) 3.05 0 0 0 5 0.2 0.85 5 0.16 4 0.12 3 0.08 2 0.04 1 0 0 6 25 0 12 18 Air Flow (CFM) 24 30 0.2 0.4 0.6 0.8 1 0.25 6.35 0.2 5.08 0.15 3.81 0.1 2.54 0.05 1.27 2 2 0 Air Flow (CFM) 20 2 0.68 Static Pressure (inch H O) 0.51 Static Pressure (mm H O) 0.34 2 0.17 15 Air Flow (CMM) Air Flow (CMM) 0 10 CFM-6015V-154-362 CFM-6015V-147-342 Static Pressure (inch H O) 0.28 0.12 Static Pressure (mm H O) 0.24 0 0 cui.com Static Pressure (mm H O) 0.12 2 Static Pressure (inch H O) 0 0 7 14 21 Air Flow (CFM) 28 35 0 For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 6 of 15 PERFORMANCE CURVES (CONTINUED) CFM-6015V-239-292 Air Flow (CMM) 0.7 0 0.15 4 0.12 3.2 0.09 2.4 0.06 1.6 0.03 0.8 2 0 0 5 10 15 Air Flow (CFM) 20 4 0.12 3 0.08 2 0.04 1 0 0 1 6 12 18 24 30 0 3.81 0.1 2.54 0.05 1.27 2 14 21 Air Flow (CFM) 28 35 0.42 0.56 2.5 0.08 2 0.06 1.5 0.04 1 0.02 0.5 0 2 0.15 0.28 2 5.08 Air Flow (CMM) 0.14 0.1 Static Pressure (inch H O) 0.8 0.2 7 0 Air Flow (CFM) Static Pressure (mm H O) 0.6 2 Static Pressure (inch H O) 0.4 6.35 0 0.85 CFM-6020V-131-210 0.25 0 0.68 0.16 Air Flow (CMM) 0.2 0.51 5 25 CFM-6015V-254-362 0 0.34 0.2 0 cui.com Static Pressure (mm H O) 0 0.17 2 0.56 Static Pressure (mm H O) 0.42 2 0.28 Static Pressure (inch H O) Air Flow (CMM) Static Pressure (mm H O) 0.14 2 Static Pressure (inch H O) 0 CFM-6015V-247-342 0 5 10 Air Flow (CFM) 15 20 0 For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 7 of 15 PERFORMANCE CURVES (CONTINUED) 0.15 3.81 2.54 0.1 1.27 0.05 10 Air Flow (CFM) 15 20 0.25 6.35 5.08 0.2 0.15 3.81 0.1 2.54 0.05 1.27 5 10 0.2 5.08 0.15 3.81 0.1 2.54 0.05 1.27 5 10 15 Air Flow (CFM) 20 25 0 15 20 Air Flow (CFM) 25 Air Flow (CMM) 0.84 7.62 0 6.35 30 0.1 0 0.14 0.28 0.42 0.56 2.5 0.08 2 0.06 1.5 0.04 1 0.02 0.5 2 0.7 2 0.56 Static Pressure (mm H O) 0.42 0.3 0 0.7 CFM-6020V-230-230 Air Flow (CMM) 0.28 0.56 0.25 0 2 Static Pressure (inch H O) 0.14 0.42 0 0 CFM-6020V-157-390 0 0.28 0 0 0 0 cui.com Static Pressure (mm H O) 5 Air Flow (CMM) 0.14 2 0 Static Pressure (inch H O) 0 0 2 0.2 0.56 5.08 2 0.42 Static Pressure (inch H O) 0.28 2 2 0.14 Static Pressure (mm H O) Air Flow (CMM) 0 Static Pressure (inch H O) CFM-6020V-150-335 Static Pressure (mm H O) CFM-6020V-142-280 5 10 Air Flow (CFM) 15 20 For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 8 of 15 PERFORMANCE CURVES (CONTINUED) CFM-6020V-237-280 CFM-6020V-245-335 Air Flow (CMM) 0.56 5.08 2.54 0.1 0.05 1.27 0 0 5 10 Air Flow (CFM) 15 0.2 5.08 0.15 3.81 0.1 2.54 0.05 1.27 2 0 0 0 0.255 0.34 0 10 15 25 20 Air Flow (CFM) 30 Static Pressure (inch H O) 1.016 0.03 0.762 0.02 0.508 0.01 0.254 6 9 Air Flow (CFM) 12 15 0.2 0.3 0.4 2.5 0.08 2 0.06 1.5 0.04 1 0.02 0.5 2 2 0.04 0.1 0.1 Static Pressure (mm H O) 2 Static Pressure (inch H O) 5 Air Flow (CMM) 0.425 1.524 1.27 3 0.84 7.62 2 0.17 0.05 0 0.7 CFM-6025V-131-167 0.06 0 0.56 6.35 Air Flow (CMM) 0.085 0.42 0.25 20 CFM-6025V-125-107 0 0.28 0 0 cui.com Static Pressure (mm H O) 0 0.14 2 3.81 0.15 0 0.3 Static Pressure (inch H O) 0.42 2 0.28 Static Pressure (mm H O) 2 Static Pressure (inch H O) 0.2 0.14 Static Pressure (mm H O) Air Flow (CMM) 0 0 4 8 Air Flow (CFM) 12 16 0 For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 9 of 15 PERFORMANCE CURVES (CONTINUED) CFM-6025V-138-220 Air Flow (CMM) 0.6 0 3.8 0.12 3.04 0.09 2.28 0.06 1.52 0.03 0.76 0 4 8 12 16 Air Flow (CFM) 20 0 0.75 6.5 0.2 5.2 0.15 3.9 0.1 2.6 0.05 1.3 0 0 0 0.9 15 20 25 0 0.21 5.4 0.14 3.6 0.07 1.8 2 12 18 Air Flow (CFM) 24 30 0.2 0.3 0.4 2.5 0.08 2 0.06 1.5 0.04 1 0.02 0.5 2 7.2 0.1 2 0.28 6 10 0.1 Static Pressure (inch H O) 9 0 5 Air Flow (CMM) 0.72 Static Pressure (mm H O) 0.54 2 Static Pressure (inch H O) 0.36 0.35 0 0.6 CFM-6025V-231-167 Air Flow (CMM) 0.18 0.45 Air Flow (CFM) CFM-6025V-152-312 0 0.3 0 0 cui.com Static Pressure (mm H O) 0 0.25 2 0.15 0.15 Static Pressure (mm H O) 0.48 2 0.36 Static Pressure (inch H O) 0.24 2 Air Flow (CMM) 0.12 Static Pressure (mm H O) 2 Static Pressure (inch H O) 0 CFM-6025V-145-270 0 4 8 Air Flow (CFM) 12 16 0 For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 10 of 15 PERFORMANCE CURVES (CONTINUED) CFM-6025V-245-270 Air Flow (CMM) 0 0.6 0.15 3.8 0.12 3.04 0.09 2.28 0.06 1.52 0.03 0.76 0 0 4 8 12 16 Air Flow (CFM) 20 0 Air Flow (CMM) 0.54 0.72 0.9 9 0.28 7.2 0.21 5.4 0.14 3.6 0.07 1.8 2 Static Pressure (mm H O) 0.36 0.35 2 Static Pressure (inch H O) 0.18 0 0 6 12 18 Air Flow (CFM) 24 30 Air Flow (CMM) 0.25 0.75 6.5 0.2 5.2 0.15 3.9 0.1 2.6 0.05 1.3 0 CFM-6025V-252-312 0 0.15 0.3 0.45 0.6 2 0.48 2 0.36 Static Pressure (inch H O) 0.24 2 0.12 Static Pressure (mm H O) 2 Static Pressure (inch H O) 0 0 cui.com Static Pressure (mm H O) CFM-6025V-238-220 0 5 10 15 Air Flow (CFM) 20 25 0 For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 11 of 15 MECHANICAL parameter conditions/description motor 4 pole DC brushless bearing system omniCOOLTM direction of rotation counter-clockwise viewed from front of fan blade dimensions CFM-6010V CFM-6015V CFM-6020V CFM-6025V material PBT (UL94V-0) weight CFM-6010V CFM-6015V CFM-6020V CFM-6025V models: models: models: models: 60 60 60 60 x x x x min 60 60 60 60 x x x x typ max 10 15 20 25 units mm mm mm mm models models models models 23 35.5 50 45 g g g g MECHANICAL DRAWINGS units: mm MOUNTING SCREW (Pan Head) wire: UL 1007, 26 AWG CFM-6010V WIRE CONNECTIONS Wire Color Function Red +Vin Black -Vin White1 RD Signal Yellow1 Tach Signal CFM-6015V WIRE CONNECTIONS Wire Color Function Red +Vin Black -Vin White1 RD Signal Yellow1 Tach Signal Notes: 1. Wires only present on versions with output signals. cui.com Screw Type Size Machine Screw M4 Self-tapping Screw M5 Standard Torque JIS B1111-1974 3~4 kgf-cm JIS B1122 Type 2 5~6 kgf-cm For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 12 of 15 MECHANICAL DRAWINGS (CONTINUED) units: mm MOUNTING SCREW (Pan Head) wire: UL 1007, 26 AWG CFM-6020V WIRE CONNECTIONS Wire Color Function Red +Vin Black -Vin White1 RD Signal Yellow1 Tach Signal CFM-6025V WIRE CONNECTIONS Wire Color Function Red +Vin Black -Vin White RD Signal Yellow1 Tach Signal 1 Notes: 1. Wires only present on versions with output signals. cui.com Screw Type Size Machine Screw M4 Self-tapping Screw M5 Standard Torque JIS B1111-1974 3~4 kgf-cm JIS B1122 Type 2 5~6 kgf-cm For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 13 of 15 APPLICATION NOTES Auto Restart Protection When the fan motor is locked by an external force, the device will temporarily turn off electrical power to the motor and restart automatically when the locked rotor condition is released. Input Current Figure 1: Auto Start Protection t Run Locked Rotation Detector Signal (White Wire) The rotation detector signal is used to detect if the fan motor is operating or stopped. The output will be logical low (VL) when fan is operating and be logical high (Vcc) when fan motor is locked. (See Figures 2~3 below). Figure 3: Rotation Detector Output Circuit Figure 2: Rotation Detector Output Waveform Vcc Vsig DC Fan Vcc Red (+) Ic RL Vsig White VL Black (-) t Run Locked Vcc ≤ max input voltage Ic ≤ 4 mA RL ≥ Vcc/Ic VL ≤ 0.5 V Customer Circuit Tachometer Signal (Yellow Wire) The tachometer signal is for detecting the rotational speed of the fan motor. The output will be a square wave when fan is operating and logical high (Vcc) when fan motor is locked (See Figures 4~5 below). The relationship between RPM & output pulses from the signal wire is as follows. 1 RPM = 2 Pulses Figure 4: Tachometer Output Waveform Figure 5: Tachometer Output Circuit Vcc Vsig 1 Pulse DC Fan Vcc Red (+) Yellow VL Ic RL Vsig Black (-) 1 RPM Run t Locked Vcc ≤ max input voltage Ic ≤ 4 mA RL ≥ Vcc/Ic VL ≤ 0.5 V cui.com Customer Circuit For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 14 of 15 SAFETY CONSIDERATIONS 1. Do not use or operate this fan in excess of the limitations set forth in this specification. CUI is not responsible for the non-performance of this fan and/or any damages resulting from its use, if it is not used or operated in accordance with the specifications. 2. CUI recommends adding a protection circuit to the product or application in which this fan is installed, such as a thermo-fuse, or current fuse or thermo-protector. The failure to use such a device may result in smoke, fire, electric shock by insulation degradation in cases of motor lead short circuit, overload, or over voltage, and/or other failure. 3. CUI recommends installing a protection device to the product or application in which this fan is installed if there is a possibility of reverse connection between Vdc (+) and GND (-). The failue to install such a device may result in smoke, fire, and/or destruction, although these conditions may not manifest immediately. 4. This fan mush be installed and used in compliance with all applicable safety standards and regulations. 5. Use proper care when handling and/or installing this fan. Improper handling of installation of this fan may cause damage that could result in unsafe conditions. 6. Use proper care during installation and/or wiring. Failure to use proper care may cause damage to certain components of the fan including, but not limited to, the coil and lead wires, which could result in smoke and/or fire. 7. Do not use power or ground PWM to control the fan speed. If the fan speed needs to be adjusted, please contact CUI to customize the product design for your application. 8. For critical or extreme environments, including non-stop operation, please contact CUI and we will gladly provide assistance with your product selection to ensure an appropriate cooling product for your application. 9. When building your device, please examine thouroughly any variation of EMC, temperature rise, life data, quality, etc. of this product by shock/drop/vibration testing, etc. If there are any problems or accidents in connection with this product, it should be mutually discussed and examined. 10. Use proper care when handling these fans. Components such as fan holders or bearings may be damaged, if touched with fingers or other objects. Additionally, static electricity (ESD) may damage internal circuits of the fan. 11. Do not operate these fans in proximity to hazardous materials such as organic silicon, cyanogens, formalin, phenol, or corrosive gas environments including, but not limited to, H2S, SO2, NO2, or Cl2. 12. CUI recommends that you protect these fans from exposure to outside elements such as dust, condensation, humidity, or insects. Exposure of this fan to such elements may affect its performance and my cause safety hazards. CUI does not warrant against damage to the product caused by outside elements. 13. The fans must be installed properly and securely. Improper mounting may cause harsh resonance, vibration, and noise. 14. Do not store these fans in an environment with high humidity. These fans must be stored in accordance with the specified storage temperature. 15. CUI reserves the right to use components from multiple sources at its discretion. The use of components from other sources will not affect the specifications as described herein. 16. The life expectancy of these fans has not been evaluated for use in combination with any end application. Therefore, the life expectancy that relate to these fans are only for reference. cui.com For more information, please visit the product page. CUI Inc │ SERIES: CFM-60V │ DESCRIPTION: DC AXIAL FAN date 12/11/2017 │ page 15 of 15 REVISION HISTORY rev. description date 1.0 initial release 07/21/2017 1.01 updated datasheet 12/11/2017 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Tualatin, OR 97062 800.275.4899 Fax 503.612.2383 cui.com [email protected] CUI offers a one (1) year limited warranty. Complete warranty information is listed on our website. CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use. CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.