Tel: +86-0755-83501315
Email: sales@sic-components.com
Image | Product Number | Pricing(USD) | Quantity | ECAD | Quantity Available | Weight(Kg) | Mfr | Series | Package | Product Status | Voltage - Rated | Lifetime @ Temp. | Operating Temperature | Size / Dimension | Material | Features | Base Product Number | For Use With/Related Products | Voltage Range | Approval Agency | Termination | Ingress Protection | Width | Weight | DataSheet | RoHS Status | Moisture Sensitivity Level (MSL) | REACH Status | Other Names | ECCN | HTSUS | Standard Package | Power (Watts) | Current Rating (Amps) | Air Flow | Static Pressure | Bearing Type | Fan Type | Noise | RPM | Material - Frame | Material - Blade | Fan Accessory Type | Fits Fan Size |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
OD9225-24HHSS | 4.3662 | ![]() |
6875 | 0.00000000 | Orion Fans | OD9225 | Bulk | Active | 24VDC | - | - | Square - 92.5mm L x 92.5mm H | - | OD9225 | - | cURus, TUV | 2 Wire Leads | - | 25.00mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | - | - | - | Sealed Sleeve | Tubeaxial | - | - | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | |||||||
![]() |
OA92AP-22-2TB | 21.8000 | ![]() |
35 | 0.00000000 | Orion Fans | OA92 | Box | Active | 230VAC | 60000 Hrs @ 40°C | -4 ~ 176°F (-20 ~ 80°C) | Square - 92mm L x 92mm H | - | OA92AP | 160 ~ 260VAC | cURus, TUV | 2 Terminals | - | 26.00mm | 0.644 lb (292.11 g) | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 1 | 10.00W | - | 27.0 CFM (0.756m³/min) | 0.140 in H2O (34.9 Pa) | Ball | Tubeaxial | 22.0dB | 2300 RPM | Aluminum | Polybutylene Terephthalate (PBT) | ||||||
![]() |
OA172AP-11-2WB1855 | 54.3961 | ![]() |
2899 | 0.00000000 | Orion Fans | OA172AP | Bulk | Active | 115VAC | 50000 Hrs @ 40°C | -22 ~ 176°F (-30 ~ 80°C) | Round - 172mm Dia | Auto Restart, Capacitor, Thermal Overload Protector (TOP) | 100 ~ 130VAC | CE, cURus, TUV, UR | 2 Wire Leads | IP55 - Dust Protected, Water Resistant | 51.00mm | - | download | Not Applicable | REACH Unaffected | 1053-OA172AP-11-2WB1855 | EAR99 | 8414.59.6590 | 1 | 32.00W | - | 155.0 CFM (4.34m³/min) | 0.370 in H2O (92.2 Pa) | Ball | Tubeaxial | 48.0dB(A) | 2300 RPM | Aluminum | Metal | |||||||
![]() |
OD6010-05MB01A | 9.3809 | ![]() |
4256 | 0.00000000 | Orion Fans | OD6010 | Bulk | Active | 5VDC | - | - | Square - 60mm L x 60mm H | Speed Sensor (Tach) | OD6010 | - | cURus, TUV | 3 Wire Leads | - | 10.00mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | - | - | - | Ball | Tubeaxial | - | - | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | |||||||
![]() |
OA180ANL-11-2WB1856 | 107.8400 | ![]() |
9601 | 0.00000000 | Orion Fans | OA180ANL | Bulk | Active | 115VAC | 50000 Hrs @ 55°C | -22 ~ 176°F (-30 ~ 80°C) | Square - 180mm L x 180mm H | Thermal Overload Protector (TOP) | 100 ~ 120VAC | cURus, TUV | 2 Wire Leads | IP56 - Dust Protected, Water Resistant | 65.00mm | - | - | ROHS3 Compliant | Not Applicable | 1053-OA180ANL-11-2WB1856 | EAR99 | 8414.59.6590 | 1 | 65.0W | - | 265.0 CFM (7.42m³/min) | 0.520 in H2O (129.5 Pa) | Ball | Tubeaxial | 53.0dB | 2200 RPM | Aluminum | Metal | |||||||
OA180AP-22-1WB1869K | 126.3900 | ![]() |
2 | 0.00000000 | Orion Fans | OA180AP-IP69K | Box | Active | 230VAC | 50000 Hrs @ 55°C | -22 ~ 176°F (-30 ~ 80°C) | Square - 176mm L x 176mm H | Thermal Overload Protector (TOP) | OA180AP | - | CE, cURus, TUV, UR | 2 Wire Leads | IP69K - Dust Tight, Water Resistant, Waterproof | 89.00mm | 4.1 lbs (1.9 kg) | download | ROHS3 Compliant | Not Applicable | REACH Unaffected | 1053-OA180AP-22-1WB1869K | EAR99 | 8414.59.6590 | 1 | 80.0W | - | 380.0 CFM (10.64m³/min) | 0.760 in H2O (189.3 Pa) | Ball | Tubeaxial | 63.0dB | 3250 RPM | Aluminum | Steel | ||||||
OD9225-48HBIP69K | 26.5200 | ![]() |
112 | 0.00000000 | Orion Fans | OD9225-IP69K | Box | Active | 48VDC | 70000 Hrs @ 40°C | -4 ~ 149°F (-20 ~ 65°C) | Square - 92mm L x 92mm H | Auto Restart | OD9225 | - | CE, cURus, TUV, UR | 2 Wire Leads | IP69K - Dust Tight, Water Resistant, Waterproof | 25.00mm | download | ROHS3 Compliant | Not Applicable | REACH Unaffected | EAR99 | 8414.59.6590 | 1 | 4.3 W | 0.090A | 50.0 CFM (1.40m³/min) | 0.240 in H2O (59.8 Pa) | Ball | Tubeaxial | 35.0dB(A) | 2900 RPM | Polybutylene Terephthalate (PBT) | Polybutylene Terephthalate (PBT) | ||||||||
![]() |
ODB22071-48HB10A | 137.9083 | ![]() |
4073 | 0.00000000 | Orion Fans | - | Bulk | Active | 48VDC | 40000 Hrs @ 40°C | 14 ~ 149°F (-10 ~ 65°C) | Round - 221.5mm Dia | PWM Control, Speed Sensor (Tach) | ODB22071 | 36 ~ 56VDC | CE, cURus, TUV, UR | 4 Wire Leads | - | 71.00mm | 3.1 lbs (1.4 kg) | download | ROHS3 Compliant | Not Applicable | REACH Unaffected | EAR99 | 8414.59.6590 | 1 | 130 W | 2.7A | 618.0 CFM (17.30m³/min) | 2.410 in H2O (600.0 Pa) | Ball | Motorized Impellers | 68.0dB | 3150 RPM | Aluminum | Thermoplastic | ||||||
![]() |
OD8025-12HB02A | 15.8800 | ![]() |
100 | 0.00000000 | Orion Fans | OD8025 | Box | Active | 12VDC | 65000 Hrs @ 45°C | -4 ~ 167°F (-20 ~ 75°C) | Square - 80mm L x 80mm H | Auto Restart, Locked Rotor Sensor | OD8025 | - | cURus, TUV | 3 Wire Leads | - | 25.00mm | 0.191 lb (86.64 g) | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 1 | 1.8 W | 0.180A | 40.0 CFM (1.12m³/min) | 0.150 in H2O (37.3 Pa) | Ball | Tubeaxial | 35.0dB | 3100 RPM | Polybutylene Terephthalate (PBT) | Polybutylene Terephthalate (PBT) | ||||||
![]() |
OA225AP-11-1TB1868 | 159.7600 | ![]() |
1 | 0.00000000 | Orion Fans | OA225AP | Box | Active | 115VAC | 45000 Hrs @ 55°C | -22 ~ 176°F (-30 ~ 80°C) | Square - 225mm L x 225mm H | Capacitor, Thermal Overload Protector (TOP) | OA225AP | - | CE, cURus, TUV, UR | 2 Terminals | IP68 - Dust Tight, Waterproof | 80.00mm | 4.8 lbs (2.2 kg) | download | ROHS3 Compliant | Not Applicable | REACH Unaffected | 1053-OA225AP-11-1TB1868 | EAR99 | 8414.59.6590 | 1 | 80.0W | - | 620.0 CFM (17.36m³/min) | 0.740 in H2O (184.3 Pa) | Ball | Tubeaxial | 66.0dB | 3100 RPM | Aluminum | Steel | |||||
![]() |
OD127-48MB01A | 23.2704 | ![]() |
1735 | 0.00000000 | Orion Fans | OD127 | Bulk | Active | 48VDC | 60000 Hrs @ 45°C | -4 ~ 167°F (-20 ~ 75°C) | Square - 127mm L x 127mm H | Speed Sensor (Tach) | OD127 | 22 ~ 55VDC | cURus, TUV | 3 Wire Leads | - | 38.50mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | 0.230A | 161.0 CFM (4.51m³/min) | 0.350 in H2O (87.2 Pa) | Ball | Tubeaxial | 53.0dB | 2950 RPM | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | |||||||
![]() |
OA5920-12WB | 39.3100 | ![]() |
4922 | 0.00000000 | Orion Fans | OA5920 | Bulk | Active | 115VAC | 40000 Hrs @ 40°C | -40 ~ 158°F (-40 ~ 70°C) | Rectangular/Rounded - 172mm L x 150mm H | - | 105 ~ 125VAC | CE, cURus, TUV, UR | 2 Terminals | IP55 - Dust Protected, Water Resistant | 51.00mm | - | - | 1053-OA5920-12WB | 1 | 28.00W | 0.370A | 195.0 CFM (5.52m³/min) | 0.380 in H2O (94.6 Pa) | Ball | Tubeaxial | 55.2dB(A) | 3075 RPM | Aluminum | Polybutylene Terephthalate (PBT) | |||||||||||
![]() |
OA172AP-22-3WB1855 | 54.3961 | ![]() |
5427 | 0.00000000 | Orion Fans | OA172AP | Bulk | Active | 230VAC | 50000 Hrs @ 40°C | -22 ~ 176°F (-30 ~ 80°C) | Round - 172mm Dia | Auto Restart, Capacitor, Thermal Overload Protector (TOP) | 200 ~ 260VAC | CE, cURus, TUV, UR | 2 Wire Leads | IP55 - Dust Protected, Water Resistant | 51.00mm | - | download | Not Applicable | REACH Unaffected | 1053-OA172AP-22-3WB1855 | EAR99 | 8414.59.6590 | 1 | 20.00W | - | 110.0 CFM (3.08m³/min) | 0.270 in H2O (67.3 Pa) | Ball | Tubeaxial | 36.0dB(A) | 1600 RPM | Aluminum | Metal | |||||||
![]() |
ODB17567-12HB10A | 106.7700 | ![]() |
7 | 0.00000000 | Orion Fans | - | Bulk | Active | 12VDC | 40000 Hrs @ 40°C | 14 ~ 149°F (-10 ~ 65°C) | Round - 175mm Dia | PWM Control, Speed Sensor (Tach) | ODB17567 | 8 ~ 14VDC | CE, TUV | 4 Wire Leads | - | 67.00mm | 1.9 lbs (900.0 g) | download | ROHS3 Compliant | Not Applicable | REACH Unaffected | EAR99 | 8414.59.6590 | 1 | 50.4 W | 4.2A | 298.0 CFM (8.34m³/min) | 1.380 in H2O (343.7 Pa) | Ball | Motorized Impellers | 64.0dB | 3000 RPM | Aluminum | Thermoplastic | ||||||
![]() |
OD9225-12LBIP55 | 11.7261 | ![]() |
6966 | 0.00000000 | Orion Fans | OD9225 | Bulk | Active | 12VDC | - | - | Square - 92.5mm L x 92.5mm H | - | OD9225 | - | cURus, TUV | 2 Wire Leads | IP55 - Dust Protected, Water Resistant | 25.00mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | - | - | - | Ball | Tubeaxial | - | - | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | |||||||
![]() |
OA92AP-22-3WB | 15.5136 | ![]() |
5050 | 0.00000000 | Orion Fans | OA92AP | Bulk | Active | 230VAC | 60000 Hrs @ 40°C | -4 ~ 176°F (-20 ~ 80°C) | Square - 92mm L x 92mm H | - | 160 ~ 260VAC | cURus, TUV | 2 Wire Leads | - | 26.00mm | - | download | Not Applicable | REACH Unaffected | 1053-OA92AP-22-3WB | EAR99 | 8414.59.6590 | 1 | 6.00W | - | 22.0 CFM (0.616m³/min) | 0.090 in H2O (22.4 Pa) | Ball | Tubeaxial | 19.0dB(A) | 1900 RPM | Aluminum | Polybutylene Terephthalate (PBT) | |||||||
![]() |
OD3510-12HB | 12.3700 | ![]() |
989 | 0.00000000 | Orion Fans | OD3510 | Bulk | Active | 12VDC | - | - | Square - 35mm L x 35mm H | - | OD3510 | - | - | 2 Wire Leads | - | 10.00mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 1 | - | - | - | Ball | Tubeaxial | - | - | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | |||||||
![]() |
OD7025-24HBXC | 13.3300 | ![]() |
2372 | 0.00000000 | Orion Fans | OD7025 | Bulk | Active | 24VDC | 70000 Hrs @ 40°C | 14 ~ 158°F (-10 ~ 70°C) | Square - 70mm L x 70mm H | Auto Restart | 22 ~ 26.4VDC | CE, cURus, TUV, UR | 2 Wire Leads | - | 25.00mm | - | - | 1053-OD7025-24HBXC | 1 | 9.6 W | 0.400A | 57.0 CFM (1.60m³/min) | 0.450 in H2O (112.1 Pa) | Ball | Tubeaxial | 54.3dB(A) | 6000 RPM | Polybutylene Terephthalate (PBT) | Polybutylene Terephthalate (PBT) | |||||||||||
![]() |
OA109AP-11/22-1WB | 24.0300 | ![]() |
68 | 0.00000000 | Orion Fans | OA109 | Box | Active | 115/230VAC | 60000 Hrs @ 40°C | -4 ~ 176°F (-20 ~ 80°C) | Square - 120mm L x 120mm H | Dual Voltage | OA109AP | 100 ~ 240VAC | cURus, TUV | 4 Wire Leads | - | 38.00mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 1 | 15.00W | - | 110.0 CFM (3.08m³/min) | 0.280 in H2O (69.7 Pa) | Ball | Tubeaxial | 42.0dB | 3000 RPM | - | - | ||||||
![]() |
OD4020-24LSS01A | 7.5959 | ![]() |
1511 | 0.00000000 | Orion Fans | OD4020 | Bulk | Active | 24VDC | 45000 Hrs @ 45°C | -4 ~ 149°F (-20 ~ 65°C) | Square - 40mm L x 40mm H | Auto Restart, Speed Sensor (Tach) | OD4020 | 14 ~ 26.4VDC | cURus, TUV | 3 Wire Leads | - | 20.00mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | 1.2 W | 0.040A | 6.5 CFM (0.182m³/min) | 0.140 in H2O (34.9 Pa) | Sealed Sleeve | Tubeaxial | 24.1dB(A) | 5150 RPM | Polybutylene Terephthalate (PBT) | Polybutylene Terephthalate (PBT) | ||||||
![]() |
OD4015-24LB | 12.3600 | ![]() |
825 | 0.00000000 | Orion Fans | OD4015 | Bulk | Active | 24VDC | 70000 Hrs @ 40°C | 14 ~ 158°F (-10 ~ 70°C) | Square - 40mm L x 40mm H | - | OD4015 | 17 ~ 26.4VDC | CE, cURus | 2 Wire Leads | - | 15.00mm | 0.053 lb (24.04 g) | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | 1.92 W | 0.060A | 6.8 CFM (0.190m³/min) | 0.160 in H2O (39.8 Pa) | Ball | Tubeaxial | 29.0dB | 6000 RPM | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | ||||||
![]() |
OD6015-24HB01A | 9.7327 | ![]() |
5867 | 0.00000000 | Orion Fans | OD6015 | Bulk | Active | 24VDC | 60000 Hrs @ 40°C | 14 ~ 158°F (-10 ~ 70°C) | Square - 60mm L x 60mm H | Auto Restart, Speed Sensor (Tach) | OD6015 | - | cURus, TUV | 3 Wire Leads | - | 15.00mm | 0.079 lb (35.83 g) | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | 1.2 W | 0.150A | 16.0 CFM (0.448m³/min) | 0.150 in H2O (37.3 Pa) | Ball | Tubeaxial | 33.0dB | 4500 RPM | Polybutylene Terephthalate (PBT) | Polybutylene Terephthalate (PBT) | ||||||
![]() |
OD5010-24MSS01A | 6.6448 | ![]() |
9963 | 0.00000000 | Orion Fans | OD5010 | Bulk | Active | 24VDC | - | - | Square - 50mm L x 50mm H | Speed Sensor (Tach) | OD5010 | - | cURus | 3 Wire Leads | - | 10.50mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | - | - | - | Sealed Sleeve | Tubeaxial | - | - | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | |||||||
![]() |
OD6015-12LS | 6.2539 | ![]() |
2412 | 0.00000000 | Orion Fans | OD6015 | Bulk | Active | 12VDC | - | - | Square - 60mm L x 60mm H | - | OD6015 | - | cURus, TUV | 2 Wire Leads | - | 15.00mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | - | - | - | Sleeve | Tubeaxial | - | - | Polybutylene Terephthalate (PBT) | Polybutylene Terephthalate (PBT) | |||||||
![]() |
OA180ANL-22-3TB1856 | 104.1300 | ![]() |
5280 | 0.00000000 | Orion Fans | OA180ANL | Bulk | Active | 230VAC | 50000 Hrs @ 55°C | -22 ~ 176°F (-30 ~ 80°C) | Square - 180mm L x 180mm H | Thermal Overload Protector (TOP) | 200 ~ 240VAC | cURus, TUV | 2 Terminals | IP56 - Dust Protected, Water Resistant | 65.00mm | - | - | 1053-OA180ANL-22-3TB1856 | 1 | 30.00W | - | 200.0 CFM (5.60m³/min) | 0.320 in H2O (79.7 Pa) | Ball | Tubeaxial | 42.0dB | 1600 RPM | Aluminum | Metal | |||||||||||
![]() |
OD6025-48LBXE | 14.3501 | ![]() |
2247 | 0.00000000 | Orion Fans | OD6025 | Box | Active | 48VDC | 70000 Hrs @ 40°C | -4 ~ 149°F (-20 ~ 65°C) | Square - 60mm L x 60mm H | Auto Restart | 28 ~ 52VDC | CE, cURus, TUV, UR | 2 Wire Leads | - | 25.00mm | - | download | ROHS3 Compliant | Not Applicable | REACH Unaffected | 1053-OD6025-48LBXE | EAR99 | 8414.59.6590 | 1 | 5.75 W | 0.130A | 40.0 CFM (1.12m³/min) | 0.430 in H2O (107.0 Pa) | Ball | Tubeaxial | 53.2dB(A) | 6050 RPM | Polybutylene Terephthalate (PBT) | Polybutylene Terephthalate (PBT) | ||||||
![]() |
G172-10HA | 2.3900 | ![]() |
21 | 0.00000000 | Orion Fans | G172 | Bulk | Active | Steel, Chrome Plated | 10 Rings | G172 | OA162S, OA172, OA5920, OD172 Series | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.90.1080 | 1 | Finger Guard | 172mm Dia | ||||||||||||||||||||||
![]() |
OA180AP-22-1WB1868 | 125.4300 | ![]() |
3 | 0.00000000 | Orion Fans | OA180AP | Box | Active | 230VAC | 50000 Hrs @ 55°C | -22 ~ 176°F (-30 ~ 80°C) | Square - 176mm L x 176mm H | Thermal Overload Protector (TOP) | OA180AP | - | CE, cURus, TUV, UR | 2 Wire Leads | IP68 - Dust Tight, Waterproof | 89.00mm | 4.1 lbs (1.9 kg) | download | ROHS3 Compliant | Not Applicable | REACH Unaffected | 1053-OA180AP-22-1WB1868 | EAR99 | 8414.59.6590 | 1 | 80.0W | - | 380.0 CFM (10.64m³/min) | 0.760 in H2O (189.3 Pa) | Ball | Tubeaxial | 63.0dB | 3250 RPM | Aluminum | Steel | |||||
![]() |
OD8038-12HHB-VXC01A | 15.5136 | ![]() |
9171 | 0.00000000 | Orion Fans | OD8038 VA | Bulk | Active | 12VDC | 50000 Hrs @ 40°C | 14 ~ 158°F (-10 ~ 70°C) | Square - 80mm L x 80mm H | Auto Restart, Speed Sensor (Tach) | OD8038 | - | cURus, TUV | 3 Wire Leads | - | 38.00mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | 22 W | 1.9A | 112.0 CFM (3.14m³/min) | 1.100 in H2O (274.0 Pa) | Ball | Tubeaxial | 60.0dB | 7100 RPM | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | ||||||
![]() |
OD6020-12MS | 6.2539 | ![]() |
8478 | 0.00000000 | Orion Fans | OD6020 | Bulk | Active | 12VDC | - | 14 ~ 122°F (-10 ~ 50°C) | Square - 60mm L x 60mm H | - | OD6020 | - | cURus, TUV | 2 Wire Leads | - | 20.00mm | - | download | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8414.59.6590 | 40 | - | - | - | Sleeve | Tubeaxial | - | - | Polybutylene Terephthalate (PBT), Fiberglass Reinforced | Polybutylene Terephthalate (PBT), Fiberglass Reinforced |
Daily average RFQ Volume
Standard Product Unit
Worldwide Manufacturers
In-stock Warehouse