CleanRooms InternationalCleanRooms International

1/5 HP
3-Speed Fan Powered Filter Module
Low Sound, Economical

SAM MS 3-S Fan Filter Units provide quiet performance and economy while delivering 90 FPM airflow velocities, perfect for most cleanroom applications. Base design includes a 99.99% efficient HEPA filter, a prefilter and a 3-speed switch with an off position which disables the unit while servicing.

Housings are fabricated from steel with a white powdercoat finish and include seismic clip suspension points.

The 1/5 HP motor blower is a forward curved direct drive motor/blower assembly with isolation mounts. Units are available in 115 Volt (60 Hz) and 277 Volt (60 Hz).

Final filters are protected with a white epoxy diamond pattern grille and are tested according to accepted procedures as described by the Institute of Environmental Sciences (IEST) and/or ISO standards. The standard HEPA filter is 99.99% eff. and an ULPA grade 99.9995% eff. filter is available as an option.

 Optional perforated stainless steel or aluminum grilles are available.

Other popular options include an 8’ power cord (115 Volt only). Refer to the back of this section for more options and accessories.


SAM is a registered trademark owned by Clean Rooms International Inc.

NCR Style Filter Data:

The HEPA Filters are designed for 90 FPM average face velocity @ initial 0.47 w.g. and have a rated efficiency of 99.99% @ 0.3 micron or larger. An anodized aluminum frame holds the 53mm media which is protected by a diamond pattern white epoxy coated steel grille.

Final filters can be replaced by removing unit from ceiling, placing on a bench, removing and replacing the filter and re-installing unit in ceiling.

Low Profile: All SAM MicroSound NCR Style Models are 12-5/8″ high.

 Air Flow: Airflow ranges from 500 to 750 CFM for a 2 x 4 unit and 250 to 400 CFM for a 2 x 2 unit. At 90 FPM, CFM is nominal 632 on a 2 x 4 and 300 on a 2 x 2 unit respectively.

General Information:

Standard Ceiling Size: All 2’ x 4’ models are designed to fit a nominal 2’ x 4’ ceiling grid with a 22.5″ x 46.5″ standard opening.

Sound Level: At average face velocity of 90 FPM measured 30″ from face of filter, sound level is approximately 50-52 dba with less than 45 dba ambient sound level. Field conditions, voltage and method of testing could produce different results.

Popular Options: Scroll down below the tables for a list of popular options.

Motor Data
MotorVoltageHzAmpsStart-Up Amps (1, 2)
1/5 HP115601.451.952.851.702.605.0
1/5 HP277600.520.711.10.600.851.5
  1. Line voltage can affect actual start-up amperage
  2. Use standard NEC tables for sizing circuits
Replacement Filters
Mfg. CodeDescription
3020702×2 NCR Style HEPA Filter, 99.99% eff. @ 0.3 micron
3020712×2 NCR Style ULPA Filter, 99.9995% eff. @ 0.12 micron
3020132×3 NCR Style HEPA Filter, 99.99% eff. @0.3 micron
3020152×3 NCR Style ULPA Filter, 99.9995% eff. @ 0.12 micron
3020902×4 NCR Style HEPA Filter, 99.99% eff. @ 0.3 micron
3021002×4 NCR Style ULPA Filter, 99.9995% eff. @ 0.12 micron
302190Prefilter 20″x20″x1″, 30% ASHRAE efficient, pleated type
Base Model
(Ordering Information)
Mfg. CodeModel or DescriptionStyleSizeVoltageMotorHEPA FilterWeight
12339SAM22 MS 3S NCR*NCR2 x 21151/5 HP30207058 lbs. (26.3 kg.)
12340SAM22 MS 3S NCR*NCR2 x 22771/5 HP30207058 lbs. (26.3 kg.)
12343SAM23 MS 3S NCR*NCR2 x 31151/5 HP30201362 lbs. (28.1 kg.)
12344SAM23 MS 3S NCR*NCR2 x 32771/5 HP30201362 lbs. (28.1 kg.)
12347SAM24 MS 3S NCR*NCR2 x 41151/5 HP30209065 lbs. (29.5 kg.)
12348SAM24 MS 3S NCR*NCR2 x 42771/5 HP30209065 lbs. (29.5 kg.)

* UL Listed
3 Speed Switch Standard on all Models

Popular Options: (Consult with factory for other possible options)
Speed Control:Prefilters:
SAMLink Remote Speed Control System19700  NCR Style Red Pilot Light- (w/36″ lead for grid or ceiling mount) Light Indicates Power to Motor
Solid State Variable Speed Controller19701  NCR Style Red Pilot Light w/Pressure Switch- (w/36″ lead for grid or ceiling mount) Light Indicates Power to Motor and Air Flow
Final Filters:Air Conditioning Mixing Box:
302071  2 x 2 NCR ULPA Filter 99.9995% eff.19958  Slanted Top with 10” Duct Collar
302015  2 x 3 NCR ULPA Filter 99.9995% eff.19959  Slanted Top with 12” Duct Collar
302100  2 x 4 NCR ULPA Filter 99.9995% eff.19947  Square with (2) 10” Duct Collars
308001  2 x 2 NCR HEPA19948  Square with (2) 12” Duct Collars
308002  2 x 4 NCR HEPARadial Diffuser Grille:
308005  2 x 4 NCR ULPA19300  2 x 2 Radial Diffuser Grille
308007  2 x 2 NCR ULPA19301  2 x 4 Radial Diffuser Grille
302072  2 x 2 NCR HEPA with Centerboard and Test PortMiscellaneous:
302094  2 x 4 NCR HEPA with Centerboard and Test Port703902  8’ Power Cord 110-120V Only
Prefilters:603322  Gasket on Downstream Edge of Unit
302197  Extended Life Prefilter 20″ x 20″ x 2″Magnehelic Gage: Refer to the Back of this Section
Duct Collar Adapters:Static Control: Refer to the Back of this Section
19950  10” Duct Collar Adapter
19951  12” Duct Collar Adapter
19952  Side Load with 10” Duct Collar
19953  Side Load with 12” Duct Collar
19955  10” Top Load Duct Collar Adapter
19956  12” Top Load Duct Collar Adapter

NOTE: Duct collar adapters #19950 & #19951 may be used without negating the UL listing. All other duct collars, air conditioning boxes, pilot lights, and adding other electrical components negates UL listing.

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