RAB KNOOK 8" Field-Adjustable LED Under Cabinet Light | 4W | 2700K-5000K | 353lm | White
RAB KNOOK 8" Field-Adjustable LED Under Cabinet Light | 4W | 2700K-5000K | 353lm | White
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About this item
About this item
- Adjustable Power: Select between 2W (50%) and 4W (100%) for a lumen range of 164-353.
- Field-Adjustable CCT: Easily switch between 2700K, 3000K, 3500K, 4000K, and 5000K.
- Daisy-Chainable: Can be linked with accessory cables for continuous runs.
- Universal Dimmability: Compatible with most common ELV and TRIAC dimmers.
- High CRI (90+): Experience exceptional color accuracy, making this ideal for kitchens, workshops, and retail displays.
Shipping & Returns
Shipping & Returns
Shipping: Enjoy free standard shipping on most orders over $99. (Exclusions apply for oversized & commercial items). We ship to the contiguous 48 United States.
Returns: We offer a 60-day return window for most items. Products must be in their original, unused condition with all packaging. (Exclusions: Special orders, clearance, and custom items).
We process payments securely and do not store credit card information.
Description
Description
Overview
The RAB Lighting KNOOKFA8W is an 8-inch field-adjustable LED undercabinet fixture that allows you to select both color temperature (2700K-5000K) and power output (2W/4W) directly at installation. Featuring 93-97 CRI, TRIAC/ELV dimming compatibility, and a 50,000-hour lifespan, it delivers professional-grade illumination for kitchens, offices, retail displays, and commercial workspaces.
Key Features
- Field-Adjustable CCT: Select from five correlated color temperatures (2700K, 3000K, 3500K, 4000K, 5000K) via built-in switch—factory default 3000K
- Adjustable Power Output: Choose 2W at 50% brightness or 4W at 100% to match your lighting needs
- Superior Color Rendering: 93-97 CRI ensures accurate, vibrant color representation for detailed tasks
- Smooth Dimming Performance: Compatible with TRIAC/ELV dimmers for flicker-free control down to low levels
- Linkable Design: Easily daisy-chain multiple fixtures with accessory cables for continuous runs
- Professional-Grade Construction: Die-formed aluminum housing with injection-molded polycarbonate lens
- UL Listed: Certified for dry locations only, ensuring safety and compliance
Technical Specifications
- Model: KNOOKFA8W
- Dimensions: 8 inches length
- Wattage: 4W at 100% / 2W at 50%
- Input: 120V, 60 Hz, Class 2
- Lumen Output: 164-353 lm (varies by CCT and power setting)
- Color Temperature: 2700K / 3000K / 3500K / 4000K / 5000K (field-selectable, factory default 3000K)
- CRI: 93-97
- Efficacy: 64-81 lm/W
- LED Lifespan: 50,000 hours (L70)
- Dimming: TRIAC/ELV compatible
- Housing: Aluminum with white powder coat finish
- Lens: Polycarbonate
- Mounting: Undercabinet surface mount
- Operating Temperature: -10°C to 45°C (14°F to 113°F)
- Compliance: UL Listed (dry locations), RoHS
- Warranty: 5-year, no-compromise
Applications
- Residential Kitchens: Provide task lighting for food preparation, cooking, and countertop work areas
- Commercial Offices: Illuminate workstations, desks, and collaborative spaces with adjustable color temperature
- Retail Displays: Highlight merchandise with high-CRI lighting that renders colors accurately
- Healthcare Facilities: Support detailed tasks in exam rooms, labs, and nursing stations
- Hospitality: Create customizable ambiance in hotel rooms, lobbies, and food service areas
- Libraries & Educational Spaces: Deliver focused task lighting for reading and study areas
- Workshops & Garages: Provide bright, adjustable illumination for detailed work and projects
Specifications
Specifications
Dimensions
Style & Materials
Characteristics & Features
Electrical Information
Item Details
Warranty & Certifications
Frequently Asked Questions
What are the main types of under cabinet lights?
What are the main types of under cabinet lights?
The main types of under cabinet lights are strip lights, puck lights, and light bars. Strip lights are flexible and provide a continuous, even glow. Puck lights are small and circular, offering focused, spotlight-like illumination. Light bars are rigid fixtures that provide uniform light in a compact form.
What light source is best for under cabinet lighting?
What light source is best for under cabinet lighting?
LEDs (Light Emitting Diodes) are widely considered the best under cabinet lighting source. While older alternatives like fluorescent and halogen were once common, LEDs are far more energy-efficient, last for tens of thousands of hours, and produce very little heat, making them a safer and more cost-effective choice for your under cabinet LED lighting.
What's the difference between hardwired, plug-in, and battery-powered under cabinet lighting?
What's the difference between hardwired, plug-in, and battery-powered under cabinet lighting?
Hardwired under cabinet lighting is a permanent solution installed directly into your home's electrical wiring, providing a seamless look with no visible cords. Plug-in under cabinet lighting is a convenient, non-permanent option that plugs into a standard outlet. Battery-powered under cabinet lighting offers ultimate portability and ease of installation, perfect for areas without nearby outlets.
What color temperature should I choose for my kitchen?
What color temperature should I choose for my kitchen?
The ideal color temperature for your under cabinet light depends on your desired ambiance. A warmer white (2700K-3000K) creates a cozy, inviting feel, while a neutral or natural white (3500K-4000K) is a versatile choice for both task lighting and everyday use. A cooler white (5000K+) offers a crisp, modern look ideal for detailed tasks.
What is the benefit of low voltage under cabinet lighting?
What is the benefit of low voltage under cabinet lighting?
Low voltage under cabinet lighting is a very safe option, as it operates at 12V or 24V using a power supply, reducing the risk of electrical shock. The thinner wiring is also easier to conceal, making it a popular choice for sleek, discreet installations in a variety of applications.

