The CSL Whisper represents a new standard in small-aperture recessed lighting, created for modern ceiling designs that prioritize minimalism and visual tranquility. With a tiny ½-inch aperture, this LED downlight delivers remarkable versatility for both new construction and remodel applications, even in the shallowest ceiling plenums with as little as 2 inches of clearance required. Whisper is powered by CSL’s proprietary SilentVu™ optic technology, which produces exceptionally high-quality light suitable for general, task, or accent lighting, all from a footprint smaller than a dime. The result is an incredibly clean aesthetic that highlights the architectural environment rather than the fixture itself, creating an environment of refined illumination and extremely low glare from every viewing angle.
Whisper is available in two configurations — the Whisper Standard fixed system and the groundbreaking Whisper Flex adjustable system — each engineered to meet different design needs. The Whisper Standard IC system provides trimless, low-noise light output from a minimal ½-inch aperture, delivering up to 1,264 lumens with precision SilentVu™ optical control in either 50° or 30° beam spreads. The housing supports a 2½-inch minimum plenum height and requires above-ceiling access for integral driver configurations. It installs cleanly with mud-in mounting, accommodating ceiling thicknesses from ½ inch to 2 inches, and includes 3-inch drywall toggle bolts for secure installation. The fixture is UL Listed for wet locations, ASTM E283 Certified Airtight, IC Rated, and compliant with California Title 24-JA8 standards using a 50° optic with 90+ CRI. Constructed with performance-grade aluminum, Whisper Standard maintains CSL’s hallmark precision engineering and comes with a five-year limited warranty.
The Whisper Flex AIC adjustable system takes the Whisper concept a step further, introducing a ¾-inch aperture that allows full control and flexibility from below the ceiling. As the first of its kind, Whisper Flex combines compact form with powerful performance, producing up to 1,271 lumens of glare-free, high-quality light. Its flexible design includes 0–30° tilt and 360° pan adjustability, enabling precise aiming for architectural accents or focused illumination. With a minimum plenum height of just 3½ inches, Whisper Flex is designed for ease of installation and maintenance. It is available with either an integral or remote driver and offers a 55,000-hour LED lifetime, ensuring long-term reliability in demanding environments.
Whisper Flex is offered with round or square trims and multiple finish options including black, champagne, and satin aluminum (reflector only). Custom color options and a decorative drop lens are also available, allowing designers to tailor the aesthetic to the surrounding architecture. Trim configurations include fixed and adjustable models, with selections for standard, trimless, and wood ceiling installations. The line also includes wall wash versions and reflector options suitable for damp and wet locations. Each housing includes galvanized steel adjustable hanger bars and butterfly brackets, with compatibility across drywall, T-bar grid, wood, and millwork ceilings. A steel junction box with four ½-inch knockouts supports flexible wiring setups, and all models meet Air Tight and CCEA (Chicago Plenum) requirements.
Across both Whisper systems, CSL ensures high performance with universal voltage drivers supporting 0–10V, TRIAC, and ELV dimming from 1% to 100%, with enhanced options such as EldoLED 0.1%–100% dimming or EcoSystem 1%–100% dimming drivers available. Every Whisper fixture is energy-efficient, California Title 24-JA8 compliant, and backed by CSL’s five-year limited warranty. Together, the Whisper Standard and Whisper Flex redefine what’s possible in compact architectural lighting — delivering powerful, precise, and silent light that complements the clean, uncluttered aesthetic of today’s interiors.
https://csllighting.com/SystemDetail.dmx?itemnum=WS-IC-Sys2
