4 Foot 6 Lamp T8 High-Bay Fixture

4ft 6 Lamp T8 Watt-Hawk Fixture

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4 foot fixture side view

Evenly Spreads Light

4 Foot T8

4 Foot T8

Uses 222 watts

222 Watts

18060 Lumens

18,060 Lumens

6700K Color Temperature

(Brightest White)

93 CRI

93 CRI

-20F minimum starting temperature

Minimum Temp

120-277V AC

120-277V AC

Built in the USA

USA Made with US Steel

5 Year Warranty

5 Year Warranty


Bring Daylight inside with Vi-Tek 93® Plus Lamps

  • gymnasium light conversion
    Conversion from Metal Halide fixtures to 4ft T8 Watt-Hawk fixtures in an gymnasium
  • warehouse light conversion
    Conversion from Metal Halide fixtures to 4ft T8 Watt-Hawk fixtures in a warehouse
  • manufacturing light conversion
    Conversion from Metal Halide fixtures to 4ft 6 Lamp T8 Watt-Hawk fixtures
  • airplane hanger light conversion
    Conversion from Metal Halide fixtures to 4ft T8 Watt-Hawk fixtures in an airplane hangar

No Cool Down and Restart Time
No Color Shift


Product Description

Our Vi-Tek 93® Plus lamps are the best natural daylight, full-spectrum fluorescents lamps on the market – and our multi-faceted, exclusive reflectors ensure their light shines brightly and evenly, with no shadows or hot spots. It’s truly like taking the roof off the building to let the daylight in.

Our Watt-Hawk™ fixture comes with a no hassle 5-year warranty on the fixture, ballast and lamps.

Have a question? We're here to help! Let’s chat.


Energy Savings

The 4 foot 6 lamp fixture only uses 222 watts.

Replace Watts Savings
400W Metal Halide 458 Watts 236 Watts
250W Metal Halide 293 Watts 71 Watts
400W High Pressure Sodium 467 Watts 245 Watts
250W High Pressure Sodium 300 Watts 78 Watts
2 F96T12VHO 482 Watts 260 Watts
2 F96T12HO 238 Watts 16 Watts


Perfect For

  • Gymnasiums
  • Airplane Hangers
  • Manufacturing Facilities
  • Convention Centers
  • Warehouses



Venting And Uplighting

Venting holes allow heat to escape and keeps dust from collecting on the lamps or reflector. 5% uplighting allows for ceiling and duct work maintenance.

Universal Voltage 120-277 Volt

Less noise than metal halide and no waiting for cool down and restrike. The high lumen ballast has a -20º F start and a NEMA ballast disconnect. 480 Volt is available.

Tool-Free Reflector Attachement

No tools are required for reflector installation or removal.

Quality Cam-Lock Lamp holders

Prevents the lamp from slipping out.

Solid 20ga (.032") Steel Body

Cold rolled steel body is painted with a smooth, glossy, highly reflective white enamel paint and has sufficent knockouts for mounting and electrical supply.

Lamp Retaining Rail

Allows for ease of lamp installation and replacement.

95% Specular Reflector

The CNC formed .020" specular aluminum reflector has 4 mirrored angles per lamp for unsurpassed lamp imaging. The reflector produces even lighting patterns to eliminate shadows and hot spots.


Fixture is designed for gripple aircraft cable installations.

Quick Connect Power Cord Receptacle

7 different power cords available for use with the quick connect power cord receptacle.

Optional Covers

Wrap lens and bolt-on wire guard are available.



Product Type: 4ft High Bay Fixture
Watts: 222
Lumens 18,060 Lumens
Color Temp 6700K
(Brightest White)
CRI 93
Length: 4 Feet
Voltage: 120-277 AC (480 available)
Made In: USA Made in the USA

Manufactured from US Steel and Assembled in USA

Warranty: 5 Years for Fixture & Lamps

Spec Sheet: HH3101 Spec Sheet PDF file



HH3101 Dimensions


Optional Covers

HH3101 Dimensions


Lumen Depreciation

T8 Lumen Depreciation vs Metal Halide