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Cluster Pi — Downlight by Lumenwerx

Lumenwerx · Downlight

Cluster Pi

Round architectural disc luminaire in three sizes (3.5", 6.5", 9") and a sub-2" profile, recessed, surface, or pendant mounted, with KVCO, High-Efficiency Lambertian, and Miniature Reflector optics delivering 360 to 2750 lm at 90 CRI.

  • ETL (UL 1598 / CSA C22.2 No. 250.0)
  • Damp location
Efficacy
62 lm/W
CRI
≥90
IP rating
Warranty
5 yr

Technical specifications

Technical specifications for Cluster Pi
Wattage 4.9–44.6 W
Luminous flux 360–2750 lm
Efficacy 62 lm/W
Color temperature (CCT) 2700K / 3000K / 3500K / 4000K / 5000K
CRI ≥90
Beam angle 25° / 35° / 55°
Mounting Recessed, Surface, Pendant (aircraft cord / stem / swivel stem)
Dimensions Three sizes: Small Ø 3 3/4", Medium Ø 6 3/4", Large Ø 9"; low profile 1 7/8" (under 2")
Distribution Direct
Finishes Textured matte white, Textured matte black, Custom RAL
Dimming 0–10V to 1% standard; canopy driver 0–10V / ELV / TRIAC; remote driver adds Lutron Hi-Lume 1% Eco & Premier 0.1% EcoSystem, DALI, eldoLED 1% ECOdrive & 0.1% SOLOdrive; PoE compatible; universal 120–277V input
Rated environments Dry, Damp location
Rated lifetime 60,000 h
Warranty 5 years

Specifications sourced from the manufacturer's datasheet . Verify against the current revision before specifying.

About this product

Cluster Pi brings the Cluster family's optics and modernist esthetic into a circular fixture that occupies a low profile of under 2" and mounts recessed, surface, or pendant (aircraft-cord, stem, or swivel stem). It is offered in three sizes—Small (3 3/4" dia.), Medium (6 3/4" dia.), and Large (9" dia.)—and three optic systems: the Kinetic Visual Comfort Optic (KVCO), whose concentric prismatic grooves redirect rays to a common focal length for precise, clean beams; the High-Efficiency Lambertian Optic (HLO) with reflective sidewalls and SupremeGrip acrylic shielding for soft diffused light; and the Miniature Reflector Optic (MRO), a molded TIR-plus-parabolic COB system offered in narrow flood (25°), flood (35°), and wide flood (55°) beams with a feathered edge. Delivered output spans 360/400 lm (S), 700/780 lm (M), and 1200/1350 lm (L) for KVCO/HLO, and 890 lm (S), 2100 lm (M), and 2750 lm (L) for MRO. Light source is a 90 CRI array with elevated R9, held within 3 SDCM, in 2700/3000/3500/4000/5000K, with LM-80 L80 lumen maintenance greater than 60,000 hours. Standard dimming is 0–10V to 1% (canopy driver: 0–10V, ELV, TRIAC; remote driver adds Lutron Hi-Lume 1% Eco and Premier 0.1% EcoSystem, DALI, and eldoLED 1% ECOdrive and 0.1% SOLOdrive), with universal 120–277V input and PoE compatibility. Housing is die-cast aluminum with a cold-rolled-steel cover, in textured matte white, matte black, or custom RAL finishes. ETL listed to UL 1598 and CSA C22.2 No. 250.0 for indoor dry/damp locations, and backed by a five-year limited warranty.

Configure a submittal spec

Pick from Cluster Pi's published options to compose a copyable, submittal-ready specification. All choices come from the manufacturer datasheet — confirm the final build against the current revision before ordering.

Color temperature
Beam angle
Distribution
Mounting
Finish

Submittal summary

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