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The LED Authority

MaxLite 400 Watt Equivalent, 235 Watt Dimmable LED Linear High Bay Fixture

SKU: M74457 | Ordering Code: BLHT235USD4820  | UPC: 767627939709

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  • Energy efficient replacement for a 400 watt HID fixture
  • Estimated life of 25.1 years based on 12 hours use per day

MaxLite 235 Watt BayMax LED Dimmable Linear High Bay fixture with optional bi-level controls offers a classic fluorescent linear high bay housing with LED strips that resemble fluorescent tubes when lit. The same size and shape as a T8 fluorescent fixture with exceptional 100+ LPW output. Fits standard fluorescent accessories. Constructed of sheet steel for heat sink and thermal control and a specular reflector for higher lumens. A top side access door provides easy serviceability by enabling unobstructed driver access.  

Equivalent to a 400 watt metal halide.

  • High efficacy LED boards with dual copper cladding for thermal dissipation
  • 1-10V Dimming standard
  • On/Off PIR motion sensor or Bi-level PIR motion sensor options available
  • Wire guard and battery back up options available
  • Housing has rear side access door for easy field access of control gear
  • Operating temperature: -14°F to 104°F
  • Suitable for continuois row mounting
  • 22 gauge steel housing, post painted
  • Class II UL listed dimming drivers
  • 120-277V universal voltage. Other voltages available
  • Standard V-hook included
  • Standard knock outs at ends and rear
  • LED lifetime to L70 at 77°F ambient is 110,000 hrs.
  • RoHS compliant, no mercury
Full Specs



Model Number


Energy Used

A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
Energy Used
235 Watts

HID Equivalent

The wattage value of a High Intensity Discharge (HID) bulb of similar brightness.
HID Equivalent

Line Voltage



Color Rendering Index is an international system used to rate a lamp's ability to render object colors. The higher the CRI (based upon a 0-100 scale) the richer and more accurately colors generally appear. CRI differences among lamps are not usually visible to the eye unless the difference is more than 3-5 points.

Color Temperature (Kelvin)

An expression of the hue of the light emitted, measured in degrees Kelvin. Usually expressed by a four digit number followed by (k), such as 2700k. Higher temperatures indicate whiter, "cooler" colors, while lower temperatures indicate yellower, "warmer" colors. Some common Kelvin temperature benchmarks are 2700k (warm white), 3500k (neutral white), 4100k (cool white), 5000k (bright white), and 6500k (daylight).
Color Temperature (Kelvin)

Brightness (lumens)

A rating of the initial light output of a bulb, rated after 100 hrs of operation. Lumens are a measure of how much light falls on one square foot of area, one foot away from the light source.
Brightness (lumens)

Average Rated Life (hr)

A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.
Average Rated Life (hr)

Length (in)

Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Length (in)

Width (in)

For fixtures and ballasts, width is the measurement of the total horizontal distance from left to right of the product in inches.
Width (in)

Height (in)

For ballasts and fixtures, height is the measurement of total vertical distance from the top of the product to the bottom expressed in inches.
Height (in)


The decorative finish of the item.
Epoxy powder coat




V-hooks provided

Bulb Type Supplied

Type of bulb supplied with the fixture
Bulb Type Supplied


5 year limited

DLC Listed

Approved by the DesignLights Consortium, a collaboration of utility companies and regional energy efficiency organizations. Approved products meet the consortium's standards for ensuring high-quality, energy-efficient lighting design.
DLC Listed

DLC Code

Code identifying the product in DLC (DesignLights Consortium) listings.
DLC Code


Indicates whether a bulb can be dimmed in conjunction with a suitable dimmer control.
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