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WAC Lighting R4FSW FQ 4" Square LED Wall Wash Trim, Die-Cast Aluminum
The WAC Lighting R4FSW is part of the FQ Recessed series, a 4" square wall wash trim with light engine built from two-piece die-cast aluminum construction. Designed for uniform floor-to-ceiling wall washing, it features 30° shielding, 45° vertical tilting, and 360° horizontal rotation, with a field-replaceable LED light engine rated 90 CRI and compatible with 0-10V, ELV, and TRIAC dimming at 120-240-277V. The trim is ETL and cETL rated for wet locations, making it a versatile choice for interior and wet-location recessed lighting applications.
Key Features
- Trade Size: 4" square trim configuration for wall wash applications.
- Durable Construction: Two-piece die-cast aluminum housing for long-lasting, corrosion-resistant performance.
- Wall Wash Optics: 30° shielding, 45° vertical tilting, and 360° horizontal rotation deliver even vertical and horizontal wall illumination.
- Voltage Rating: 120-240-277V universal input with 0-10V, ELV, and TRIAC dimming compatibility.
- Light Engine: Spring-mounted LED light engine on the trim for easy field replacement and service, rated 90 CRI with Asym beam spread and a 50,000-hour average rated life.
- Operating Range: Rated for ambient operating temperatures from -4°F to 104°F (-20°C to 40°C).
Certifications & Compliance
- ETL Listed
- cETL Listed
- Energy Star Qualified
- Title 24 Compliant
- Title 20 Compliant
- Suitable for Wet Locations
Technical Specifications
- Bulb Base: LED Module - Universal Driver
- Bulb Shape: LED Module
- Bulbs Included: Yes
- Collection: FQ
- Dimmable: 0-10V;ELV;TRIAC
- Hardwired or Portable: Hardwired
- Product Type: Recessed Trims
- Safety Rating: ETL;cETL
- Warranty: 5 Years Functional, 2 Years Finish
- Subcategory: 4" LED
- Avg Rated Hours: 50000
- CRI: 90
- Beam Spread: Asym
- Voltage: 120-240-277
- Material: Die-cast Aluminum
- Country of Origin: China
- Location Rating: Wet
- Style: Modern; Transitional
Typical Applications
- Commercial and Hospitality Wall Wash Lighting
- Retail and Gallery Accent Lighting
- Corridor and Lobby Illumination
- Wet-Location Recessed Lighting Installations
- New Construction and Renovation Projects
Why WAC Lighting?
WAC Lighting builds the R4FSW with two-piece die-cast aluminum construction and a field-replaceable light engine, backed by ETL and cETL wet-location listings for dependable, code-compliant performance. With a 5-year functional and 2-year finish warranty, this FQ series wall wash trim delivers consistent, professional-grade illumination for demanding commercial and residential recessed lighting projects.
Manufacturer Resources
Specification Sheet
Product Specs
- Bulb Base:
- LED Module - Universal Driver
- Bulb Shape:
- LED Module
- Bulbs Included:
- Yes
- Collection:
- FQ
- Dimmable:
- 0-10V;ELV;TRIAC
- Hardwired or Portable:
- Hardwired
- Product Type:
- Recessed Trim
- Safety Rating:
- ETL;cETL
- Subcategory:
- 4" LED
- Avg Rated Hours:
- 50000
- CRI:
- 90
- Beam Spread Angle:
- Asym
- Product Voltage:
- 120-240-277
- Product Material:
- Die-cast Aluminum
- Location Rating:
- Wet
- Product Style:
- Modern; Transitional
- Department:
- Electrical
- Product Group:
- Lighting
- Product Subgroup:
- Recessed Lighting
WAC Lighting R4FSWL-927-BK – Frequently Asked Questions
1) Can the WAC Lighting R4FSW 4-inch square wall wash trim be used in a shower or outdoor soffit?
Yes. The R4FSW carries a wet location rating and is ETL and cETL listed, so it can go in showers, covered exterior soffits, and canopies as well as dry interior ceilings. The two-piece die-cast aluminum body is what makes that rating possible.
2) Will the R4FSW wall wash trim work on my 277V commercial circuit?
It will. The FQ series R4FSW runs on a universal 120-240-277V input, so the same trim covers residential 120V work and 277V commercial lighting circuits. It is a hardwired fixture, not plug-in.
3) What dimmers work with the WAC R4FSW LED trim?
The integral driver accepts 0-10V, ELV, and TRIAC dimming. On a 120V residential job a TRIAC or ELV wall dimmer works; on a 277V commercial system with a building control panel, use the 0-10V input. There is no separate driver module to order, the LED light engine comes with the trim.
4) Will this square trim actually wash a wall evenly from ceiling to floor, or just spotlight it?
It is built for wash, not spot. The R4FSW uses an asymmetric beam with 30 degree shielding, 45 degrees of vertical tilt, and 360 degrees of horizontal rotation, so you can aim the asymmetric distribution across the wall plane for even floor-to-ceiling coverage. If you want a tight beam on artwork or a pedestal, an adjustable spot or accent trim is the better pick.
5) Does the WAC R4FSW meet California Title 24 for a new build?
The R4FSW is listed as Title 24 and Title 20 compliant and Energy Star qualified, which is what a California permit set usually requires for recessed LED luminaires. It is also ETL and cETL listed for US and Canadian jobs.
6) Is a housing included with the WAC R4FSW, or do I order that separately?
What you get here is the 4-inch square wall wash trim with the LED light engine installed. It is a trim, so the recessed housing or frame-in kit is a separate line item on the order. Wiring is hardwired, and installation detail is covered in WAC's installation guide at https://zensupply.com/content/pdf/wac-lighting/installation-guide-58d8f1.pdf.
7) Is there a warm-dim version of the WAC FQ square wall wash trim?
Yes. Alongside the fixed 2700K, 3000K, 3500K, and 4000K options there is a 3000-1800K warm-dim choice that shifts toward candlelight as it dims. It is available in Black, Dark Bronze, Haze or Haze/White, and White.
8) If the LEDs fail in a few years, do I have to tear out the housing?
No. The LED light engine is spring-mounted to the trim and field-replaceable, so service happens from below the ceiling without disturbing the housing or the rough-in. Average rated life is 50,000 hours.
9) Can I use the WAC R4FSW trim in an unheated garage or a cold-climate exterior soffit?
Yes, within limits. Ambient operating range is -4F to 104F (-20C to 40C), which covers unconditioned garages, parking structures, and most covered exterior applications in cold climates. The die-cast aluminum body is corrosion resistant for those locations.
10) I need the trims on a corridor to match our black square downlights. What finishes does the R4FSW come in?
Four finishes run through the line: Black, Dark Bronze, Haze, and White, with the 5.5-inch lengths listing Haze/White on several color temperatures. Since it is a 4-inch square aperture in the FQ series, it lines up visually with other square FQ trims on the same ceiling run.
11) Is 90 CRI good enough for retail and gallery display lighting?
The R4FSW is rated 90 CRI, which is the usual threshold specified for retail merchandise, hospitality, and gallery work where fabric and skin tones have to read correctly. For color-critical museum work some specs call for 95 or higher.
How fast can I get the WAC Lighting R4FSWL-927-BK delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the WAC Lighting R4FSWL-927-BK come with a warranty?
Absolutely. The WAC Lighting R4FSWL-927-BK is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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