M4PR
Designed with non-ferrous materials for MRI imaging suites, the M4PR features Williams TrimLock™ reflector retention system to eliminate trim sag and an IP65-rated die-cast trim with easy-to-clean flush lens
Cross-References
Top equivalents — 12 across 12 brands
Compare top 3 →- spec →
The PFX-5310 is a versatile 4-foot architectural linear fixture designed for direct and indirect lighting. It features field-selectable color temperatures ranging from 2700K to 5000K and four adjustable lumen output settings, reaching up to 5,078 nominal lumens. Built for durability, the unit includes a premium powder-coat housing and a long-life LED system rated for up to 175,000 hours. It offers flexible mounting options, including suspension, surface, wall, and recessed kits, making it suitable for diverse architectural environments. The fixture also supports toolless linking of up to 10 units at 120V for streamlined installation. Additionally, it is cULus listed for damp locations and features 2.5kV surge protection for enhanced electrical reliability.
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The WCSDB Commercial downlight is equipped with a convenient selectable color temperature and wattage dip switch, making it versatile for a wide range of applications.
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The Corelite Class R6 small aperture linear LED luminaire is the ideal solution to numerous design requirements. Utilizing the Corelite engineered linear optical system the R6 delivers lumens both to the task surface yet maintains a soft luminous glow for high visual comfort. The low profile housing can be installed in most grid types including Armstrong Techzone™. The R6 is perfectly suited for open offices, corridors, perimeters, or any space with stringent design or energy requirements.
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- cct: 2700K → 3000K
- wattage: 22.8W → 87.7W
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6 inch LED recessed downlight designed for vandal resistant or sealed / medical applications. Lumen packages from 1000 - 7000 lumens with color temperatures of 2400K, 2700K, 3000K, 3500K, 4000K, and 5000K. Available with dim-to-warm technology. Choose from an open reflector, or an enclosed version with a bottom lens or a bottom trim ring with lens. Available with lens thicknesses up to 0.375", with standard or tamper-resistant stainless steel countersunk screws.
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HALO 3” shallow new construction square LED downlight / directional housings and trims
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Engineered for restricted plenum spaces, the 3" Ultra-Shallow Downlights deliver boutique-level precision in a compact 2.5" housing. Field-interchangeable optics ensure designers have complete control over beam spread, while translating center beam technology guarantees the light always hits its target—eliminating side glare or shadows. Perfect for tight spaces where architectural control and refined illumination matter most.
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The Lanterra 9000 Wall Cylinder Series is a premium line of architechtural wall luminaires. The three available models span three diameters, 2.5", 3.25", and 4.25" to fit the scale and light level most appropriate for a wide range of applications. Line voltage input can be managed with integral or remote drivers while always having the ability to cover a 4" junction box. After installation, the light output can be fine tuned as needed with field interchangeable optics and up to two optical accessories.
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RSRK LED Recessed Strip Retrofit Kits is a series of products developed to convert recessed linear products to LED while improving the lighting in the existing space. The RSRK is engineered for simple and quick installation and offers customers the opportunity to retrofit from fluorescent to LED affordablly and efficiently.
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- cct: 2700K → 3000/3500/4000/5000K
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The Define series by Neo-Ray characterizes the ultimate in minimalist simplicity by providing clean, uniform lines of illumination in virtually any architectural environment. The Define series delivers outstanding efficacy in a variety of profile widths. 1”, 2”, 3”, 4” and 5” luminaire widths are all specifiable to the nearest inch in length and can be fitted with standard flush, regress, proud and asymmetric lensing. In wall 90- degree corners and wall to ceiling 90 degree transitions can all be ordered as standard components and blend seamlessly into the most complex architectural spaces. Robust construction and adaptable, modular components make installation simple and ensure straight runs.
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Cross-references are informational starting points — verify with the manufacturer before specifying or purchasing. Spot a bad match? Report it →
Local Reps
Who reps H.E. Williams
Full directory →30 rep agencies carry the Williams line across 49 states. Pick your state.
Alabama AL1 agency
- SESCO LightingSignify (Philips)
Birmingham · Mobile
Alaska AK1 agency
- Arctic Sales AgencyCurrent
Statewide
Arizona AZ1 agency
Statewide
Arkansas AR1 agency
Statewide
California CA3 agencies
- ALRSignify (Philips)
Fresno · Sacramento · San Francisco
- OCS Lighting & ControlCurrent
San Diego
Los Angeles · Ventura
Colorado CO1 agency
Statewide
Connecticut CT1 agency
- Apex Lighting SolutionsSignify (Philips)
Statewide
Delaware DE1 agency
- DiversifiedCurrent
Statewide
District of Columbia DC1 agency
- Commercial Lighting SalesCurrent
Statewide
Florida FL1 agency
- SESCO LightingSignify (Philips)
Fort Myers · Jacksonville · Miami · Orlando · Panhandle · Tampa
+39 more states in the full directory →
Line cards are directional — confirm coverage with the agency before routing a spec.