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MedMaster Downlights

Model #: M4DL4S-TW
  • 4" sealed, recessed downlight with regressed or flush lens trim
  • Round or square aperture 
  • High-output, high CRI LED lamp sources with 
  • 2700K-6500K white tuning capability
  • Conducted emissions controlled as per MIL-STD-461G
Nursing Stations
Patient Rooms
Lens Type(s):.125" High-Impact Clear Acrylic
Lamp Type(s):LED
Size(s):4" Aperture
Specifications are subject to change without notice. Please consult your Kenall Customer Service for help with special requests at (800) 4 Kenall.

Technical Specifications

Driver/Controls120-277VAC, 50/60Hz electrical input (PF ≥ 0.9, THD < 20%).  Minimum 85% electrical efficiency.  Serviceable, constant-current multi-channel programmable driver with dual analog (0-10V) control inputs for intensity and CCT.  Optional DALI (Type 8) driver.  Logarithmic intensity profile with 0.1-100% range, with dim-to-dark capabilities.  Linear profile on CCT adjustment.  Refer to charts on page 2 for further details.
HeatsinkDie-cast aluminum with external radial fins for natural convection.
LED ModuleTunable-white LED array provides 2700K through 6500K CCT range with a two-point path.  3-step MacAdam variation allowance on each CCT.  Minimum 80 CRI (R9 >0).
ListingsLuminaire is certified to UL standards by Intertek Testing Laboratory for non-IC and Wet Location installations. IP64 and IP65 rating per IEC60598. Conducted emissions controlled as per MIL-STD-461G. NSF2 Splash/Non-Food Zone. Optional CCEA compliance.
OpticalRound or Square aperture.  Diffused tempered-glass upper lens.  Flush lens trim options include a clear impact-resistant acrylic lens continuously sealed to the trim ring.  Available with various reflector finishes.  See Ordering Information for available options. 
PhotometricsPhotometry tested to the IESNA LM-79-08 standard by an ILAC/ISO17025 accredited laboratory.  For photometric information, go to
Rough-In Frame18-gauge die-formed, corrosion-resistant steel. Vertically adjustable collar accommodates ceiling thicknesses up to 1.5", adjustable post-installation. Adjustable mounting bars for installation with wood and steel frame joists and T-grid ceiling systems spaced up to 24" on center. Quick-access junction box accessible post-installation from above and below ceiling. Includes (5) 1/2" knock-outs to allow straight conduit runs.
Trim/Housing SectionIP-rated housing section incorporates the heat sink, LED module, optics and lower trim. Configurable with an IP64-rated Regressed or Flush lens trim that is secured to the Rough-In frame with hidden torsion springs, and an IP65 Flush lens trim secured with three (Round) or four (Square) Phillips-head, captive fasteners. Closed-cell gasketing at ceiling flange.  Anti-microbial finish standard on all exposed painted surfaces. See Trim Ordering Information for available options.
WarrantyLimited five (5) year LED warranty.

This product is able to comply with the latest domestic preference legislation, such as the Buy American Act (BAA), Trade Agreement Act (TAA), Build America, Buy America Act (BABA), and others.


Product Documentation

Installation Files

Photometry (IES)