Delta Breez SLM50-B BreezSlim ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$48.37
Delta Breez BreezSlim SLM50-B 50 CFM ventilation fan grille shown installed flush on ceiling — front view

Delta Breez SLM50-B BreezSlim 50 CFM Bathroom Exhaust Fan Motor & Grille Assembly

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Model: SLM50-B
From the BreezSlim Collection
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$48.37
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Delta Breez BreezSlim SLM50-B — 50 CFM Motor & Grille Replacement Kit

The BreezSlim SLM50-B delivers powerful, whisper-quiet ventilation in one of the smallest bath fan footprints on the market — 7.5" × 7.25" × 3.94". At just 1.0 Sone and 6.4 Watts, it's the only 3" duct fan model that qualifies for ENERGY STAR® Most Efficient certification. Whether you're retrofitting an aging bath fan in a multifamily unit or speccing new construction, the SLM50-B drops in without a housing swap and installs in minutes.

Key Features

  • Only 3" duct vent fan to achieve ENERGY STAR® Most Efficient status
  • Ultra-quiet operation at 1.0 Sone — DC brushless motor, no belt, no brush wear
  • Ultra-low power consumption: 6.4 Watts — annual energy cost ~$6.73 at 24/7 operation
  • Compact 7.5" × 7.25" housing fits existing rough openings — no drywall work required for most retrofits
  • UL listed for ceiling or wall mount installation
  • Green LED indicator light confirms fan is running
  • Available in contractor packs for multifamily and volume projects
  • 3-Year Limited Warranty

Specifications

  • CFM: 50
  • Sones: 1.0
  • Wattage: 6.4W
  • Voltage: 120V / 60Hz
  • Duct Diameter: 3"
  • Product Dimensions: 9-3/8" W × 10-3/4" D × 4" H
  • Weight: Under 5 lbs.
  • Certifications: ENERGY STAR® Most Efficient, UL Listed
  • Warranty: 3-Year Limited

Retrofit & Replacement Fit

The SLM50-B motor and grille assembly is designed as a direct replacement for existing BreezSlim housings and as a compact new-install solution where duct runs are limited to 3". Its slim profile and lightweight construction make it the go-to choice for property managers, remodelers, and contractors who need a code-compliant, energy-efficient upgrade without structural modification.

Product Specs

Subcategory:
BreezSlim
Static Pressure:
0.1 - 0.25
Maximum CFM:
50
Sones:
1.0 - 1.2
Current:
0.18 Max
Duct Diameter:
3"
Warranty:
3 Year Limited
Energy Star:
Yes
Product Group:
Washroom/Bath
Product Subgroup:
Ventilation Accessories
Collection:
BreezSlim
Product Type:
Grille
Product Voltage:
120/60
Product Height:
4"
Product Category:
Ventilation Fans
Product Width:
9-3/8"
Department:
Plumbing
Product Wattage:
6.3 - 6.4
Product Depth:
10-3/4"
Parts and Accessories Type:
Grille
Application:
Ventilation Fan

Delta Breez SLM50-B – Frequently Asked Questions

1) Does the Delta Breez SLM50-B come with the fan housing, or is it just the motor and grille?
The SLM50-B is the motor and grille assembly for the BreezSlim fan. Delta sells it as a direct replacement that drops into an existing BreezSlim housing, so on a retrofit you pull the old motor and grille, set this one in, and leave the housing and the duct connection where they are. It is also used as a compact new-install fan where the duct run is limited to 3 inches. If you are replacing a fan that is not a BreezSlim, the housing already in the ceiling is not part of what you are buying here.
2) Will the Delta Breez SLM50-B hook up to 3 inch bath fan duct?
Three inch duct is exactly what the SLM50-B is built around. The blower port is 3 inches and it moves 50 CFM through it at 1.0 to 1.2 sones. Delta calls it the only 3 inch duct fan to earn ENERGY STAR Most Efficient status, which is the reason most people pick it for slim duct runs over a joist or through a wall cavity that will not take a 4 inch pipe.
3) Can the BreezSlim SLM50-B be mounted in a wall, or is it ceiling only?
Both. The SLM50-B bath fan is UL Listed for ceiling or wall mount installation, so it works in a bathroom with no accessible ceiling cavity, a half bath backing an exterior wall, or a unit where the run has to go out sideways rather than up. Same 3 inch duct connection either way.
4) Will the SLM50-B fit the opening my old bath fan leaves behind, or do I have to patch drywall?
Most retrofits do not need drywall work. The BreezSlim fan body is 7.5 by 7.25 by 3.94 inches, small enough to go back into an existing rough opening, and the finished assembly measures 9-3/8 inches wide by 10-3/4 inches deep by 4 inches high. That 4 inch height is what matters if you are working in a shallow ceiling cavity or a wall bay. Measure your existing opening against the 7.5 by 7.25 footprint before you order if the old fan was an oversized unit.
5) Is 50 CFM enough exhaust for my bathroom?
For a typical apartment or hotel bath, yes. 50 CFM intermittent is the figure normally used as the minimum for a residential bathroom, and the common sizing rule is roughly 1 CFM per square foot of floor for rooms up to about 100 square feet. The SLM50-B tops out at 50 CFM, so a 50 to 100 square foot bath is its range. A large master bath, a room with a separate enclosed toilet compartment, or a bath with a jetted tub or steam shower needs more air than this fan moves, either a higher CFM unit or a second fan over the wet area.
6) How loud is the Delta Breez SLM50-B in an occupied unit?
Quiet enough to run next to a bedroom wall. The BreezSlim SLM50-B is rated 1.0 to 1.2 sones across its rated static pressure band of 0.1 to 0.25 in. w.g. One sone is about the level of a quiet refrigerator, which is why this one gets specced in hotels, senior housing, and multifamily units where tenants switch a noisy fan off and then complain about mold.
7) What electrical does a BreezSlim SLM50-B need, and can it share a circuit with the bathroom lights?
Standard line voltage, 120V at 60Hz, no transformer or low voltage wiring. Draw is 6.3 to 6.4 watts with a maximum current of 0.18 amps, so the fan adds almost nothing to a branch circuit and normally goes on the same circuit as the bath lighting or a wall switch. It does not need a dedicated home run.
8) Should I use a 3 inch slim fan like the BreezSlim or a standard 4 inch duct bath fan?
It comes down to the duct, not the fan. A conventional bath fan wants 4 inch pipe and enough ceiling cavity to take a deep housing. The BreezSlim SLM50-B is built for the openings that will not give you that: it runs 3 inch duct, the body is 7.5 by 7.25 by 3.94 inches, and the whole assembly is only 4 inches high. Use it where you are retrofitting an aging fan in a multifamily unit, sneaking a run through a wall or over a joist, or working a bath with no room for a full size housing. If you have an existing 4 inch run and normal cavity depth, a standard 4 inch fan is the simpler install and gets you more CFM options.
9) Will the BreezSlim SLM50-B still pull 50 CFM through a long 3 inch duct run?
The SLM50-B is rated across a static pressure band of 0.1 to 0.25 in. w.g., with 50 CFM at the top of its output and sound running 1.0 to 1.2 sones over that band. In practice that means it holds its rating through a reasonable run with a couple of elbows and a damper, not through an unlimited length of flex. Keep the run short and as straight as the framing allows, use smooth wall duct where you can, and the fan performs inside its published range.
10) Does the Delta Breez SLM50-B meet ENERGY STAR for a green build or energy retrofit spec?
The SLM50-B is ENERGY STAR qualified, and Delta lists it at ENERGY STAR Most Efficient, the only 3 inch duct fan to reach that tier. Paired with 6.3 to 6.4 watts of draw and a 1.0 sone rating, it is the model that gets written into energy retrofit and high performance specs where a fan has to clear both an efficiency and a sound threshold.
11) How does a tenant know the BreezSlim fan is actually running when it is this quiet?
There is a green LED indicator on the grille that lights when the fan is running. At 1.0 sone you often cannot hear the SLM50-B from across the room, so the light is what tells a tenant or a maintenance tech the unit is on. It also saves a service call on the complaint that the fan quit when someone just did not hear it.
How fast can I get the Delta Breez SLM50-B delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 Delta Breez SLM50-B come with a warranty?
Absolutely. The Delta Breez SLM50-B is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Delta Breez SLM50-B?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Delta Breez SLM50-B from ZenSupply?
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