Keystone Back-Lit LED Panel Light — 20–50W Selectable — 3500K/4000K/5000K The Keystone KT-BPLED /G2 Back-Lit LED Panel Light Series is available in three sizes — 1×4, 2×2, and 2×4 — each with field-selectable wattage and color temperature. Wattage and CCT are adjusted via switches on the driver with no rewiring required. The series delivers up to 6,200 lumens with up to 140 lm/W peak efficacy, supports 0–10V dimming, operates on 120–277V, and is backed by a 10-year limited warranty. All sizes are IC Rated, Damp Location Listed, cUL Listed, DLC Listed, and carry the N3B Trusted Manufacturer designation. Compatible with Keystone SmartLoop PIR sensors and emergency battery backup units (sold separately). Select your size above to view size-specific wattage options, lumen output, and accessories. Key Features Selectable Wattage: Field-selectable wattage via switches on the driver — 1×4 and 2×2: 20/30/40W; 2×4: 30/40/50W. No rewiring required. Output Range: Up to 6,200 lumens (2×4 at 50W). Peak efficacy up to 140 lm/W (2×4 at 30W/4000K). CRI: >80. Selectable CCT: Field-selectable between 3500K, 4000K, and 5000K via switches on the driver — no tools required. Lens & Optics: Backlit design with precise optical lenses over each individual LED — optimal light diffusion, consistent surface illumination, no risk of yellowing over product lifetime. Dimming: 0–10V continuous dimming via Keystone built-in driver with integrated J-box. Compatible dimmer required, sold separately. Voltage: 120–277V universal voltage driver. Location Rating: IC Rated — Damp Location Listed. Certifications: cUL Listed — DLC Listed — N3B Trusted Manufacturer. Rated Life: L70 50,000 hours (LED chip: L70 >100,000 hours). Warranty: 10-year limited warranty. SmartLoop & Emergency Ready: Compatible with Keystone SmartLoop PIR sensor (KTSL-FC1-UV-KO-PIR) and emergency battery backup units — factory or field-installable, sold separately. Installation Note: 2×4 size for use in non-fire rated installations only. Performance & Light Output Wattage and lumen output vary by size. Select your size above for the full per-wattage, per-CCT lumen table. 1×4 (KT-BPLED40PS-14 /G2): 20/30/40W selectable — up to 4,600 lm at 40W. Peak efficacy up to 130 lm/W at 20W. 2×2 (KT-BPLED40PS-22 /G2): 20/30/40W selectable — up to 4,500 lm at 40W. Peak efficacy up to 130 lm/W at 20W. 2×4 (KT-BPLED50PS-24 /G2): 30/40/50W selectable — up to 6,200 lm at 50W/4000K. Peak efficacy up to 140 lm/W at 30W/4000K. CRI: >80. Power factor: >0.9. L70 rated life: 50,000 hours. Smart & Control Features All sizes support 0–10V continuous dimming via the onboard Keystone driver with built-in junction box. The optional Keystone SmartLoop PIR sensor (KTSL-FC1-UV-KO-PIR) — a Bluetooth Mesh wireless fixture controller with remote-mountable daylight and PIR motion sensing, 120–277V, 3A max load — can be factory-installed or field-installed separately. A compatible 0–10V dimmer is required, sold separately. Electrical Input voltage: 120–277V. Dimming: 0–10V. Power factor: >0.9. Mercury-free. Construction Housing & Thermal: Aluminum frame with stepped edge design and gloss white paint. Keystone 0–10V dimmable LED driver with built-in junction box. IC Rated. Lens & Optics: Backlit design with precise optical lenses over each individual LED — optimal light diffusion and consistent surface illumination with no risk of yellowing over product lifetime. Finish: White (gloss). Environmental & Safety: IC Rated — Damp Location Listed. 2×4 size for use in non-fire rated installations only. Installation & Mounting Standard Mounting: Recessed installation into standard T-grid ceiling systems. IC Rated for installation in insulated ceilings. Optional Mounting Methods (Sold Separately, size-specific): 1×4 Surface Mount Kit: KT-BPLED-SM-14-KIT /G2 2×2 Surface Mount Kit: KT-BPLED-SM-22-KIT /G2 2×4 Surface Mount Kit: KT-BPLED-SM-24-KIT /G2 Cable Hang Kit (all sizes): KT-BPLED-CABLE-KIT Optional Accessories (Sold Separately): SmartLoop PIR Sensor: KTSL-FC1-UV-KO-PIR — Bluetooth Mesh wireless controller with daylight and PIR sensing Emergency Battery Backup (5W): KT-EMRG-LED-5C-500-EN/DF — 5W, 500 lm Smart Safe backup Emergency Battery Backup (12W): KT-EMRG-LED-12C-1200-EN/DF — 12W, 1,200 lm Smart Safe backup Emergency Backup Bracket — 1×4: KT-BPLED-EM-14-KIT Emergency Backup Bracket — 2×2/2×4: KT-BPLED-EM-22/4-KIT J-Box Add-On: KT-BPLED-JBOX-1 Certifications & Rebates cUL Listed — IC Rated and Damp Location Listed DLC Listed — qualifies for utility rebate programs. Visit designlights.org and search the catalog number for your size to verify rebate eligibility with your utility provider. N3B Trusted Manufacturer Typical Applications Corporate offices and conference rooms — selectable CCT and wattage allow on-site tuning without re-ordering across all three sizes Retail and showroom spaces — backlit optical design delivers even, shadow-free illumination; 2×4 delivers up to 6,200 lm for large-format ceiling grids Educational facilities — selectable CCT supports varied classroom environments; 120–277V covers standard U.S. electrical systems Healthcare and institutional spaces — IC and damp rated with DLC qualification for utility rebate eligibility on large-scale retrofit projects Corridors and common areas — optional SmartLoop PIR sensor enables occupancy and daylight-based dimming for automated energy savings Fluorescent retrofit projects — replaces 2-lamp F32T8 (1×4, 2×2) or 3-lamp F32T8 (2×4) with selectable wattage and CCT; 10-year warranty across all sizes What’s Included Keystone KT-BPLED /G2 LED backlit panel fixture — size per selection — White Safety bracket
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