Stamped aluminum heat-sink (passive heat dissipation) · ultra-slim 0.38″ wafer profile · spring-loaded retention clips with 6N–8N elasticity force · plenum-rated quick-connect cable from disk to remote J-Box
Lens / Diffuser
PMMA frosted lens (no-yellowing — PMMA stays clear for decades while polycarbonate yellows in 3-5 years under continuous UV) · edge-lit distribution: light enters perimeter of lens guide, disperses uniformly across the diffuser face with no glare or dark spots
Finish
White (standard) · Matte Black + Copper detachable trim plate accessories available (LDRS-{4|6|8}R1/TBK · LDRS-{4|6|8}R1/TCR — see Page 4 ordering matrix)
Trim Style
Baffle (B) — glare-control ribbing for direct-view applications · Flat (F) — standard low-profile aesthetic · both ship in same retail box format with same mounting kit
Ingress / Location
Wet-location listed (uniformly across all 3 sizes × 2 trims = 6 SKUs) · suitable for indoor + outdoor in dry, damp, and wet locations · NEC-compliant closet installs · suitable for use in closets per NEC guidelines
Operating Temp
−22°F to +105°F (−30°C to +41°C) ambient — wider range than most slim-wafer competitors (Halo HLB: 32–104°F)
Field-selectable via dip switch on the Plug-n-Play J-Box (not the disk — install-ergonomics differentiator vs Halo HLB / NICOR DLR / Lotus / Lithonia which all put the switch on the disk face): 2700K / 3000K / 3500K / 4000K / 5000K — no SKU change required, single fixture covers any spec. Color temperature warrantied to shift no more than 180K over warranty period.
115° edge-lit beam from PMMA optic — no field-replaceable optic. Per Datasheet polar plots: LDRS409 measures C0/180 = 115.3° / C90/270 = 115.4°; LDRS612 measures C0/180 = 116° / C90/270 = 115.9° — effectively a 115° even-distribution beam across both sizes.
Lumen Output (4000K)
See Page 4 for full 2-size × 5-CCT lumen matrix · 644 lm @ 4000K (4″ · 9W · 72 lm/W) · 1,041 lm @ 4000K (6″ · 12W · 87 lm/W) · 1,474 lm @ 4000K (8″ · 18W · 82 lm/W). LDRS8 peak is 1,504 lm @ 3500K. Datasheet "Up to 96 LM/W" claim does not match calculated peak from lumen matrix (86.8 lm/W on LDRS6 @ 4000K) — flagged for engineering reconciliation.
Driver & Electrical
Voltage
120V AC · 60 Hz (single voltage — not 120-277V universal)
Driver
Constant-current driver in remote Plug-n-Play J-Box · electronically isolated · plenum-rated quick-connect cable from disk to J-Box · J-Box sized for AWG12 to AWG20 supply cable with strain-relief design
Power Factor
> 0.9 Non-Flicker
THD
< 15%
Dimming
TRIAC + ELV · 5% to 100% (per Datasheet page 1) · approved 12-SKU dimmer list (6 Leviton + 6 Lutron — see Page 4 dimmer matrix)
Mounting
Standard Install
Direct-cutout install — no housing or can required. Cutout: Ø 4 21/64″ (for LDRS4) · Ø 6 19/64″ (for LDRS6) · Ø 8 5/64″ (for LDRS8). Wafer drops into cutout, spring clips lock from above.
Plug-n-Play J-Box
Remote driver J-Box mounts above the ceiling in the cavity, plenum-rated quick-connect cable to the wafer. Color-select dip switch on J-Box face. Mount J-Box to joist or T-grid drop · J-Box buckle design for easy access.
New Construction · Retrofit
Suitable for new construction OR retrofit applications. Fits inside most 4″ and 6″ recessed housings (no existing recessed housing required). For drop-ceiling commercial install, pair with the T-Grid Installation Kit (4″ + 6″ only).
Compliance & Certifications
Standards
ETL listed (US + Canada · UL 1598) · ENERGY STAR certified · CA Title-24 Part 6 + JA8 compliant · Wet Location listed · RoHS
Rebate-Ready
ENERGY STAR + JA8 paths qualify for residential + light-commercial utility-rebate programs at PG&E, SCE, SDG&E, and most state IOUs · PRO tier — typical offset 25-50% of fixture cost on a property-wide retrofit · Radius-II is not DLC-listed (commercial DLC-required rebate programs do not apply; for DLC paths see Eclipse-II PRO+) · search "LDRS" at archipelagolighting.com/pages/rebate-center
Warranty
5-year limited (luminaire · light output · driver performance · fixture finish) · 50,000-hour L70 rated life · all 6 active SKUs ship QuickShip
archipelagolighting.com · LDRS Radius-II submittal · ETL + ENERGY STAR + Title-24/JA8 + Wet Location · Specifications subject to change
Rev. 2026-05 · Page 2 of 4
ARCHIPELAGO
Lighting Group
Catalog Number
LDRS612-R2S5F
Dimensions & Mounting
Top + Side views · Slim wafer ultra-thin profile · Plug-n-Play J-Box · spring-clip retention · T-Grid Kit drop-ceiling option
Wafer recesses into ceiling cutout · 0″ projection below ceiling line
J-Box
Plug-n-Play J-Box mounts remote (above ceiling) · plenum-rated quick-connect cable to wafer · NO housing or can required at the wafer cutout
In-the-Box Components
Disk + J-Box
Slim wafer disk + remote Plug-n-Play J-Box · plenum-rated quick-connect cable pre-installed between them
Retention
Spring-loaded retention clips · 6N–8N elasticity force · pre-installed on the wafer
Single Unit Pkg
Single-fixture retail box
Contractor Carton
12-pack master carton available (per disk packaging on file: LDRS612-R2S5F 12-Pack)
Mount Path
Standard Install
Direct cutout · spring clips lock from above · pop-in install · no can or housing
Drop-Ceiling (Opt)
T-Grid Installation Kit (LDRS-{4|6}R1/TGK · QuickShip · 4″ + 6″ only) — lay-in to 2×2 or 2×4 ceiling tile without cutting
archipelagolighting.com · LDRS Radius-II submittal · ETL + ENERGY STAR + Title-24/JA8 + Wet Location · Specifications subject to change
Rev. 2026-05 · Page 3 of 4
ARCHIPELAGO
Lighting Group
Catalog Number
LDRS612-R2S5F
Ordering Information
Configure your catalog number
Family
LDRS
Size & Wattage
612
Gen · CCT
-R2S5
Trim
F
Segment
Available Codes
LDRS
Multi-fⒶMILY LED Slim Wafer family prefix
409 / 612 / 818
Size & wattage — 4″/9W · 6″/12W · 8″/18W (3 sizes in the Radius-II active SKU set; 8″ is the rare-size differentiator vs Halo HLB / NICOR DLR / DMF DRD2 which all stop at 6″)
-R2S5
Family designator — Radius-II (R2) + 5-CCTselect (S5) · fixed across all SKUs · CCT set on the Plug-n-Play J-Box dip switch
B / F
Trim style — Baffle (B · glare-control ribbing) or Flat (F · standard low-profile aesthetic)
