The Lightolier FR4R10ESCT1W is a 4-inch, 12-watt round LED flat downlight engineered for installations where fire rating, shallow ceiling depth, and lighting quality all matter. Its frameless, reflector-free design makes it the ideal solution for low-plenum and existing shallow-space ceilings, while the field-selectable CCT — switchable between 2700K, 3000K, 3500K, 4000K, and 5000K — eliminates the need to stock multiple SKUs and allows color temperature to be dialed in on-site during installation.
Delivering 1,000 lumens at 90 CRI through a high-quality PMMA diffuser, this fixture produces smooth, diffused light with excellent color rendering. The aluminum and steel junction box features a locking power connector with a 14.96" (38cm) standard connection length, and quick connectors are included for fast, reliable wiring. The isolated Class 2 driver is RoHS compliant and supports ELV/TRIAC dimming down to 5% at 120V — consult the dimmer compatibility list for verified pairings.
The FR4R10ESCT1W carries an impressive compliance portfolio: ETL listed for damp locations, UL Fire Resistant rated, IC rated for direct contact with thermal insulation, and AirSeal certified for minimal air leakage. It is ENERGY STAR® certified and Title 24 (JA8) compliant, with an operating temperature range of -30°C to 40°C. Rated for 50,000 hours of expected lifetime and backed by a 5-year warranty, this fixture is built for long-term performance in both commercial and residential applications. It ships in a matte white finish, and a black trim (part # DSFD4RTBK) is available separately.
