Notch 4 is a linear recessed LED luminaire designed to elevate architectural ceiling design with a unique hollow aperture that adds subtle punctuation and visual depth. Featuring exceptionally low brightness, high color accuracy, and industry-leading optical and energy performance, Notch 4 redefines luminous ceiling integration. At the heart of its performance is a system of transparent, vertical Anidolic optical structures with precision linear light extraction elements that deliver tightly controlled distributions. This advanced optical configuration minimizes glare while allowing for wide fixture spacing, creating inviting, luminous environments that feel balanced and comfortable.
A key architectural feature is the optional trimless Dado endcap, which extends the hollow aesthetic to the edge of drywall soffits, forming a continuous line of light and adding material richness and dimensionality to the ceiling plane. Whether installed as individual fixtures or continuous rows, Notch 4 offers extensive design flexibility. Contractors benefit from its installation-friendly design, which includes quick-connect components, lift-and-shift optics, and magnetic upper reflectors that eliminate the need for tools.
Notch 4 supports a wide range of trim and endcap options, with extruded aluminum designs that ensure a precise, clean fit across both drywall and grid ceiling systems. Trim compatibility includes USG® 4-inch Logix T-bar and Armstrong® 4-inch TechZone® components, enabling seamless specification. Layouts can be custom-designed using a full palette of trim corners and intersections, or users can simplify the process by selecting from preconfigured illuminated patterns. Continuous rows are available in 1-foot increments for drywall ceilings and 2-foot increments for T-bar ceilings, while standalone fixtures are offered in 2-foot, 3-foot, 4-foot, and 8-foot sizes.
Engineered for optimal integration with contemporary architecture, Notch 4 merges advanced optical science with minimalist visual language. Anidolic optics—refined to disperse and homogenize light—eliminate visual hotspots and LED point source images, ensuring smooth, color-accurate illumination throughout. The system is specifically engineered for LED sources and delivers consistent, high-quality lighting performance across a range of applications.
Constructed from 20-gauge satin-coated steel and available with extruded aluminum flanges, Notch 4 is finished in standard white powdercoat or optional black trim. Its precision-molded, high-transmittance clear acrylic lenses work in tandem with a long-life, mid-flux LED system designed for lumen maintenance of ≥L90 at 60,000 hours. Color temperature options include 3000K, 3500K, and 4000K with standard CRI≥80 and R9≥0, or high-fidelity CRI≥90 and R9≥50—all color-binned within ≤2 SDCM for uniformity.
The luminaire includes integral high-efficiency multivolt drivers for 120–277V or 347V systems and operates at 50–60 Hz. With a power factor greater than 0.90, total harmonic distortion under 20%, and dimming capabilities down to 3%, 1%, or even 0.1%, Notch 4 meets stringent electrical performance benchmarks. It includes ANSI-compliant surge protection and NEMA 410-rated inrush current control.
Emergency options include a 10W Class 2-rated battery pack that provides 90 minutes of operation, producing 1100–1300 lumens, along with an optional GTD (Generator Transfer Device) that disables dimming control during emergency use to ensure full light output.
Designed for dry or damp indoor environments within an ambient range of 0–30°C (32–86°F), Notch 4 is not suited for chemically aggressive or natatorium environments. Cleaning should be done using only a lightly dampened, soft cloth without harsh chemicals. The fixture is UL Listed for use in the U.S. and Canada, rated for Chicago Plenum applications, IC rated, and compliant with Living Building Challenge (LBC) Declare program standards.
Notch 4 is a refined blend of architecture, optics, and innovation—an ideal solution for projects demanding modern minimalism, precise performance, and seamless ceiling integration.
https://www.fluxwerx.com/products/11/notch-2
