BSS722 and BSS721 indirect orientation

Mullion BSS721

2-1/4” tall mullion mount asymmetric indirect LED luminaire

CutsheetExplore Mullion



The BSS721 is a linear LED luminaire with asymmetric optics for mullion or wall mount indirect applications. The 2-1/4” square extruded aluminum housing contains a multi-piece reflector system and acrylic lens. A wide variety of driver options, light output and color temperatures are available, to maximize versatility.


Architectural White (semi-matte)
Architectural White (semi-matte)
White (semi-gloss)
White (semi-gloss)
Black (semi-matte)
Black (semi-matte)
Matte Black
Matte Black
Environmental Satin Silver
Environmental Satin Silver
Satin Anodize
Satin Anodize
Inquire about custom finishes


  • Nominal Length: 45"
  • Fixture Orientation: Indirect
  • Output: L: low | R: regular | H: high
  • Lumens/ft.: L: 630 | R: 850 | H: 1290
  • Watts/ft.: L: 5.5 | R: 7.7 | H: 12.5
  • Luminaire Lumens: L: 2336 | R: 3166 | H: 4806
  • Efficacy (LPW): L: 114 | R: 111 | H: 103

Note: all data reflects fixture with 3500K LEDs


Fixture constructed of an extruded aluminum housing, extruded acrylic lens and machined aluminum end caps

Fixture configured with brackets for mounting to mullions or other vertical surfaces

Fixture features a multi-piece asymmetric reflector system and acrylic lens for indirect applications

Standard finishes include architectural white (semi-matte), white (semi-gloss), black (semi-matte), matte black, environmental satin silver (alternative to anodize), bronze and primer powder coat, applied post production (consult factory for custom finishes)

Satin anodize finish also available (may require additional lead time)

Available in nominal lengths of 2’–8’ single fixtures and continuous runs

Basic continuous run fixtures provided with 18 ga. wiring harness for 6 Amp maximum load (consult factory for runs requiring multiple circuits, etc.)

Standard integral 120-277V driver offered with 0-10V dimming or non-dim (other dimming driver options available)

Integral 120-277V emergency battery backup available for 4’ nominal non-dim or 0-10V (consult factory for all other lengths/ drivers)

Standard light outputs are 630, 850 or 1290 lumens per foot LEDs available in 2700K, 3000K, 3500K, and 4000K, within a 3 step MacAdam ellipse, all with 90+ CRI typical

Life: 50,000 hours L70

Limited five year warranty

UL and C-UL listed for dry and damp locations

IBEW manufactured and assembled

Made in U.S.A.

Product Data

Nominal Fixture Length

  • 23: 22-5/8"
  • 34: 33-5/8"
  • 45: 44-5/8"
  • 56: 55-5/8"
  • 67: 66-5/8"
  • 78: 77-5/8"
  • 89: 88-5/8”
  • RUN: Specify run length to the nearest one foot. Factory will configure using the least quantity of fixtures as close to the desired run length as possible without exceeding the length. Run to be confirmed with a shop drawing.

Actual dimension dependent on run configuration

Correlated Color Temperature

  • 27: 2700K-90+ CRI
  • 30: 3000K-90+ CRI
  • 35: 3500K-90+ CRI
  • 40: 4000K-90+ CRI


  • ND: non-dimming
  • D: 0-10V, 1%
  • DTR: triac, 1%
  • DLV: electronic low voltage, 1%
  • HES: Lutron EcoSystem, soft-on fade-to-black, 1%
  • EL: eldoLED ECOdrive 0-10V, 1%
  • ES: eldoLED SOLOdrive 0-10V, 0.1%
  • ELD: eldoLED ECOdrive DALI, 1%
  • ESD: eldoLED SOLOdrive DALI, 0.1%


  • WI: wall mount – indirect

Light Output

(lumens per foot)

  • L: low – 630
  • R: regular – 850
  • H: high – 1290
  • CF: consult factory for custom output

Run Configuration

  • SN: single
  • ST: starter
  • AD: adder
  • TR: terminator


  • ED: emergency driver (4’ non-dim or 0-10V only)


  • 1: asymmetric


BSS721 indirect section

Mounting Options

BSS721 wall/mullion mount - indirect orientation
Wall/Mullion Mount – Indirect Orientation

Mounting option includes:

  • 2-1/4” H x 4-3/4” W bracket projects the fixture housing 5/8” from the mounting surface
  • Bracket finish matches fixture finish, or ESS for satin anodize (SA) housing

Ordering Code: WI

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