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Slot 4 LED

Recessed Linear | Direct Illumination | 4" Nominal Width

by Mark Architectural Lighting

  • Design2Ship Program

Beauty and Performance

The SLOT LED family combines modern aesthetic elegance with unequalled performance and energy efficiency, design flexibility, seamless controls integration, and the service and support of an industry leader. Three widths, recessed, pendant, surface, and wall. In short, everything you need to light your imagination.

Performance - best-in-class efficacy, delivered lumens and CRI.

Beautiful Dimming - Available constant current LED drivers from eldoLED deliver smooth, flicker free dimming to 0.1%.

nLight® Intelligent Controls - Intuitive and complete solution that eliminates compatibility issues and reduces deployment costs.

Mark 360° Total System Integration - Acuity Brands manufactures both the luminaire and the controls. This ensures unparalleled color consistency, beautiful dimming, maximum energy efficiency complete with integrated controls- all supported and warranted by Acuity Brands.

A+ Certified Systems – Pre-qualified configurations of Slot Family luminaires can be part of an A+ Certified lighting system - your assurance of compatible and consistent performance.


  • Direct illumination with efficacy up to 95 lumens per watt
  • Low-profile, 4-3/8” installed depth
  • Smooth, flicker-free dimming to 1%, standard; dimming to 0.1%, optional
  • Downlight modules, optional
  • nLight® enabled controls
  • Continuous runs in 1” increments, standard; 1/4” increments for custom orders
  • Color temperatures of 3000K, 3500K, 4000K
  • 80 CRI, standard; 90 CRI, optional
  • Nominal 4" wide housing fabricated from heavy-gauge extruded aluminum
  • Snap-in, extruded, clear frosted acrylic lens (flush or regressed)
  • Universal mounting detail for sheetrock or various tile grid ceilings
  • Suggested Replacement Products

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See the spec sheet below or learn more about our Design2ShipTM program. 

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  • Specifications

    A+ Capable Yes
    Application Type Education, Government, Hospitality, Offices & Banks, Religious, Retail
    Architectural Style Transitional
    Brand Mark Architectural Lighting
    Color White
    Color Rendering Index 80, 90
    Control Networkable Control, Occupancy Sensor
    Correlated Color Temperature 2700 K, 3000 K, 3500 K, 4000 K, 5000 K
    Environment Indoor
    Light Source LED - Static
    Regulatory Listing CSA
    Lumen Output 300 LM, 350 LM, 400 LM, 450 LM, 500 LM, 550 LM, 600 LM, 650 LM, 700 LM, 750 LM, 800 LM, 850 LM, 900 LM, 1000 LM
    Mounting Type Recessed
    Product Type Linear
    Quick Ship Yes
    Series SL4L, SL4LQS
    Shape Rectangular
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