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Description

RAB Wafer WFRETRO4B 4 in Baffle Retrofit Downlight — 10/8/6W / Selectable CCT

The RAB WFRETRO4B is a 4-inch baffle trim wafer retrofit downlight that installs directly into existing recessed housings using an E26 Edison socket adapter — no rewiring required. Delivering up to 920 lumens at 10W with field-selectable CCTs from 2700K to 5000K, it replaces a 60W incandescent lamp while offering full dimming capability down to 10%.

Key Features

  • Input Wattage: Field-selectable 10W / 8W / 6W via dip switch
  • Lumen Output: Up to 920lm (10W) / 742lm (8W) / 582lm (6W)
  • CCT: Field-selectable 2700K / 3000K / 3500K / 4000K / 5000K
  • CRI: 90+ (R9 greater than 50)
  • Beam Angle: 110 in +/-10 in
  • Dimming: TRIAC/ELV compatible, dims to 10%
  • Lifespan: 50,000 hours (L70, IES LM-70)
  • Input Voltage: 120V, Constant Current Class 2 driver
  • Trim Style: Baffle with frosted polycarbonate lens
  • Energy Star: Version 2.2 Certified (Energy Star ID 3398292)
  • Title 24 JA8: California Title 24 Part 6 compliant
  • RoHS: Mercury and UV free, RoHS-compliant components

Construction & Aesthetics

The WFRETRO4B features a white baffle trim with a frosted polycarbonate lens that distributes light evenly and smoothly for general lighting applications. The plastic and metal enclosure is air-tight certified per ASTM E283, ensuring energy efficiency and code compliance.

Electrical & Installation

Installation is tool-free using the included E26 Edison socket adapter — simply screw into the existing recessed socket and snap into the housing. Compatible with standard 4 in or 5/6 in recessed downlight housings. For new construction, pair with NDCANIC4R (4 in new construction IC-rated housing) or RDCANIC4R (4 in remodel IC-rated housing). Emergency backup power available via DRI-21-EMGR-DC-D10. Operates at 120V on compatible TRIAC/ELV dimming systems.

Light Output & Performance

The WFRETRO4B delivers up to 920 lumens at 10W with a 93 lm/W efficacy at peak output. The 110-degree beam angle provides wide-area illumination for general ambient lighting. Color consistency maintained within a 4-step MacAdam Ellipse with less than 200K CCT shift over 5 years. Rated for 50,000 hours per IES LM-70 testing.

Typical Applications

  • Residential remodel lighting in kitchens, bathrooms, and living areas
  • Rental property updates and energy retrofit projects
  • Low-clearance ceilings where canless or wafer-style fixtures are required
  • Wet locations including bathrooms, covered patios, and canopies

Specifications

Dimensions

Length/Depth
5.1 in
Width/Diameter
5.1 in
Height
1.63 in
Weight
0.49 lb

Style & Materials

Finish
White
Material
Metal, Plastic
Shape
Round

Characteristics & Features

Base Type
E26
Lamp Color
2700K, 3000K, 3500K, 4000K, 5000K, Selectable CCT
Color Rendering
90 CRI
Delivered Lumens
835
Beam Angle
110
Dimmable
Yes
Trim
Open
Reflector
Baffle

Electrical Information

Voltage
120V
Total Wattage
10W

Item Details

MPN
WFRETRO4B
Brand
RAB Lighting
Family
Wafer Retrofit
UPC
192552034005

Warranty & Certifications

Product Warranty
5 Years
Lamp Life
50,000 Hours
Product Rating
Wet Rated

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.

See Full Shipping Policy | See Full Return Policy

Frequently Asked Questions

Does the RAB WFRETRO4B require a new recessed housing, or does it work with existing cans?

No — the WFRETRO4B is a wafer retrofit that installs directly into existing 4 in or 5/6 in recessed downlight housings using the included E26 Edison socket adapter. No rewiring or new housing is required. For new construction, pair with the NDCANIC4R (4 in new construction IC-rated housing) or RDCANIC4R (4 in remodel housing).

Is the RAB WFRETRO4B IC rated for installation in insulated ceilings?

No — the WFRETRO4B itself is not IC rated. However, it is air-tight certified per ASTM E283. For insulated ceiling installations, use it with an IC-rated housing such as the NDCANIC4R or RDCANIC4R, which are rated for direct insulation contact.

What accessories are compatible with the RAB WFRETRO4B?

Yes — several accessories are available. For new construction, use the NDCANIC4R (4 in IC-rated new construction housing). For remodel applications, use the RDCANIC4R (4 in IC-rated remodel housing). Emergency backup power is provided by the DRI-21-EMGR-DC-D10 emergency driver. Color trim rings and goof rings are also available through RAB Lighting for aesthetic customization.

Is the RAB WFRETRO4B dimmable, and what dimmer switches are compatible?

Yes — the WFRETRO4B dims smoothly down to 10% on compatible TRIAC and ELV dimming systems. Refer to RAB Lighting's Dimmer Compatibility List at rablighting.com for a full list of tested and approved dimmer switches.

How much light does the WFRETRO4B produce, and what size room does it work for?

The WFRETRO4B delivers up to 920 lumens at 10W (3500K) with a 93 lm/W efficacy — equivalent to a 60W incandescent. The 110-degree beam angle makes it ideal for general ambient lighting in rooms up to approximately 100 sq ft per fixture. Brightness and CCT are both field-selectable via dip switch, so output can be tuned to 742lm (8W) or 582lm (6W) as needed.
LED Wall Pack, 19000 Lumens, 120W, 30K|40K|50K, On/Off Photocell, 120-277V - Bees Lighting

RAB Lighting

RAB Lighting is a leading manufacturer of professional-grade LED lighting, with a reputation built on innovation, performance, and an unwavering commitment to quality. For over 75 years, RAB has engineered durable, energy-efficient fixtures for commercial and industrial applications. From powerful floodlights to high-performance high bays, RAB is the definitive choice for contractors, specifiers, and facility managers who demand superior and reliable lighting solutions.

Shop RAB Lighting

This 4-inch retrofit downlight features 10W power output, 835 lumens, and selectable color temperature. Customers said it serves as a "great replacement" for older lighting fixtures. The wet-rated design offers versatility for various installations. With positive feedback on replacement use, it appears reliable for retrofit applications.

  • 5 stars: 5 (83%)
  • 4 stars: 1 (17%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
J
John E.

Looks great, Thanks

C
Christine Borrayo

Competitive pricing and shipped immediately.

j
jeff Hrenya

happy with my purchase. Would recommend.

D
David Younan-Montgomery

Great replacement for my old ones.

J
Jeremiah O.

Good color, lots of lumens for the watts used. Super easy to install.

Y
Yasuharu K.

Exellent speed!