LDP – LED Edgelit Flat Panel Lighting Fixture

LED Edgelit Panel

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Refined Performance

A contemporary look and feel, delivering high performance, edge-to-edge uniform illumination and outstanding energy efficiency

Simkar’s LDP Edgelit LED Flat Panels provide a flawless look and uniform diffusion for uniformly illuminated spaces with energy savings of up to 56%.

The LDP is offered in 1×4, 2×2 and 2×4 configurations, producing up to 5300 delivered lumens with efficacy of up to 111 lumens per watt. The LDP provides superior energy savings, high performance and is IP-50 dust proof rated for use in applications such as offices, schools and healthcare facilities.

  • Uniform edge-to-edge illumination provides a flawless appearance
  • Edgelit LED light guide panel – free from glare and shadow
  • Energy efficient – up to 56% energy savings vs. fluorescent
  • 50,000 hour operating life (L70) eliminates maintenance
  • Excellent color rendition; >80 CRI
  • Available in 3500K, 4000K and 5000K
  • 120V-277V, 0-10V dimming (standard)
  • IP-50 dust proof
  • DesignLights Consortium® Qualified, DLC 4.0/4.1
  • 5 Year Warranty

*Please refer to DesignLights Consortium® website for specific configuration listings.


LDP – LED Edgelit Flat Panel Lighting Fixture Configuration

Series Size Lumens* CCT Voltage Accessories
LDP 14 = 1 x 4

22 = 2 x 2

24 = 2 x 4

39L = 3900 lumens (38W) (1×4 only)
= 4100 lumens (39W) (2×2 only)
= 5200 lumens (49W) (2×4 only
35 = 3500K
40 = 4000K
50 = 5000K
U1 = Universal 120-277V,
0 – 10V Dimming (standard)
ELSR = Emergency Backup, Remote Only (Consult Factory)
GCK14 = 1×4 Drywall Kit
GCK22 = 2×2 Drywall Kit
GCK24 = 2×4 Drywall Kit
Surface box kits: (post painted extruded aluminum frame)

= for 1×4 edge lit LED panels
SLDP22 = for 2×2 edge lit LED panels
SLDP24 = for 2×4 edge lit LED panels
Model Size Input Power Light Output* Efficacy Color Temperature Comparable Fluorescent Operating Temperature
LDP1439L40U1 1×4 37.79W 3,950 lm 104 lm/W 4000K 2 32WT8 -4˚F (-20˚C) to 104˚F (40˚C)
LDP2241L40U1 2×2 38.49W 4,180 lm 108 lm/W 2-32W T8 U6
LDP2451L40U1 2×4 48.42W 5,220 lm 107 lm/W 2 or 3 32WT8

* Delivered lumens
** Consult a lighting engineer to meet specific requirements



HOUSING/LENS: White post-painted extruded aluminum frame. Edge mounted LEDs utilizing acrylic light guide panel for uniform, edge-to-edge illumination with no visible LEDs, hotspots, or shadows. Multi-layered optical construction including white frosted bottom diffuser, a laser etched acrylic light guide panel, and a white PET reflector all secured by a steel top backplate. Four – (2×2) and six (1×4, 2×4) grid clips secure panel to grid. Steel back box houses power supply and wiring.

LEDs: LDP Edge Lit LED flat panels are available in 3 light levels (delivered): LDP 22 4100 lumens (39W), LDP 14 3900 lumens (38W), LDP 24 5200 lumens (49W) at 4000K 80 CRI. Also available in 3500K and 5000K. Operating life is 50,000 hours (L70). Light engines consist of 180 (LDP 22), 216 (LDP14) and 260 (LDP24) mid power LED chip packages mounted directly to the edge of the extruded aluminum frame. LEDs are LM-80 tested and 3 step binned for color consistency.

ELECTRICAL: Power supply is 120V-277V operation. 0-10V dimming standard. Power factor is >0.9. Power supply is enclosed in a steel housing/wiring compartment and secured to back of fixture via screws. 1×4 and 2×2 use (1) 42W 1A power supply; 2×4 uses (1) 50W 1.15A power supply.

TEMPERATURE: Suitable for use in operating temperatures of -4°F (-20°C) to 104°F (40°C).

CEILING COMPATIBILITY: LDP fixtures are compatible with “G” type 15/16” tee lay-in grid styles. Mounting clips provided for suspension by wire. For drywall ceiling applications, use GCK frame kits.

ACCESS / WIRING: Integral wiring back box has access points with (4) 1/2″ KOs.

LISTINGS: ETL Listed damp location. DesignLights Consortium® qualified, DLC 4.0/4.1. IC Rated for direct contact with insulation.

WARRANTY: 5 year limited warranty.


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