CleanRooms InternationalCleanRooms International

Gel Seal Style HEPA or ULPA Filter
Replaceable from Roomside

SAM MicroSound GS fan filter units are ideal for pharmaceutical companies, manufacturers of medical devices and companies in highly regulated industries. The SAM GS units feature a gel channel on the upstream side of the final filter which provides a leak-free seal between the filter and the housing.

SAM MicroSound GS units feature a HEPA or ULPA filter replaceable from roomside while the filter housing remains in place.

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

The energy efficient N310 Motor blower is a low watt backward curved impeller, single phase, permanent split capacitor type motor blower assembly with thermal overload protection. Units are available in 115V (60 Hz), 208-230V (50/60 Hz) and 277V (60 Hz).

SAM MicroSound Fan Filter Units include a 99.99% efficient HEPA filter, 30% ASHRAE pleated type prefilter, seismic clip suspension points, safety switch which disables the unit while servicing, and solid state variable speed control with RFI suppression, allowing the airflow to be fine tuned.

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.

An acrylic eggcrate grille in an anodized aluminum frame is hinged to open, permitting removal of the filter without removing the unit from the ceiling.

The integral light fixture and T8 electronic ballast is located inside the filter housing below the final HEPA filter. This permits fluorescent light bulbs or ballast to be replaced easily. Lights are automatically on while fan motor is running.

Other popular options include an 8’ power cord (110 Volt only), 99.9995% eff. ULPA grade final filter, UL 900 Class 1 filters and duct collar adapters. Refer to the back of this section for more options and accessories.

For horizontal flow applications consult with one of our cleanroom experts in your area, or call the factory for more information.

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

GS Style Filter Data: The HEPA Filter is designed for 90 FPM average face velocity @ initial 0.47 w.g. and has 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 are replaceable from roomside.

Access Port: This port is located in the center of the filter element face and is used for introducing an upstream challenge or measuring static pressure.

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.

Air Flow: Airflow ranges from 340 to 640 CFM for a 2 x 4 unit and 220 to 340 CFM for a 2 x 2 unit. At 90 FPM, CFM is nominal 510 on a 2 x 4 and 220 on a 2 x 2 unit respectively. Airflow for units running at 50 Hz will be about 20% less.

Sound Level: At average face velocity of 90 FPM measured 30” from face of filter, sound level is approximately 54 dba with less than 45 dba ambient sound level. Field conditions, voltage and method of testing could produce different results.

Popular Options: Refer to next page for a list of popular options.

Motor Data
Motor Voltage Hz Watts Running Amps Start-Up Amps
N310 115 60 185 1.6 5.1
N310 208-230 50/60 170 1.2-1.7(1) 2.0(2)
N310 277 60 165 1.0 1.9
  1. Running amps will be less on 50Hz
  2. Line voltage can affect actual start-up amperage
Replacement Filters
Mfg. Code Description
302201 2 x 2 GS Style HEPA Filter, 99.99% eff. @ 0.3 micron
302204 2 x 2 GS Style ULPA Filter, 99.9995% eff. @ 0.12 micron
302214 2 x 3 GS Style HEPA Filter, 99.99% eff. @ 0.3 micron
302215 2 x 3 GS Style ULPA Filter, 99.9995% eff. @ 0.12 micron
302200 2 x 4 GS Style HEPA Filter, 99.99% eff. @ 0.3 micron
302203 2 x 4 GS Style ULPA Filter, 99.9995% eff. @ 0.12 micron
302190 Prefilter 20″x20″x1″, 30% ASHRAE efficient, pleated type
Base Model
(Ordering Information)
Mfg. Code Model or
Style Size Voltage Motor Variable
Speed Control
HEPA Filter Weight
12808 SAM22 MS GSLI GSLI 2×2 115 N310 703084 302201 68 lbs. (30.8 kg.)
12809 SAM22 MS GSLI GSLI 2×2 277 N310 703912 302201 68 lbs. (30.8 kg.)
12810 SAM23 MS GSLI GSLI 2×3 115 N310 703915 302214 87 lbs. (39.5 kg.)
12811 SAM23 MS GSLI GSLI 2×3 277 N310 703084 302214 87 lbs. (39.5 kg.)
12812 SAM24 MS GSLI GSLI 2×4 115 N310 703915 302200 106 lbs. (48.1 kg.)
12813 SAM24 MS GSLI GSLI 2×4 277 N310 703084 302200 106 lbs. (48.1 kg.)
12824 SAM24 MS GSLI GSLI 2×4 208-230 N310 703912 302200 106 lbs. (48.1 kg.)

Prefilter and Safety Switch are Standard on all Models

Popular Options: (Please choose from the following part numbers when ordering options)
Final Filters: Roomside Variable Speed Control:
302204  2 x 2 GS ULPA Filter 99.9995% eff. 19933  CRF Style 110-120 Volt
302214  2 x 3 GS ULPA Filter 99.9995% eff. 19934  CRF Style 208-230 Volt
302203  2 x 4 GS ULPA Filter 99.9995% eff. 19935  CRF Style 277 Volt
Prefilters: Pilot Light:
302197  Extended Life Prefilter 20″ x 20″ x 2″ 19702  GS/CRF Style Red Pilot Light- factory mounted in grille frame (Light Indicates Power to Motor)
Duct Collar Adapters: 19703  GS/CRF Style Red Pilot Light w/Pressure Switch- factory mounted in grille frame (Light Indicates Air Flow)
19950  10” Duct Collar Adapter Miscellaneous:
19951  12” Duct Collar Adapter 703902  8’ Power Cord 110-120V Only
19952  Side Load with 10” Duct Collar 603322  Gasket on Downstream Edge of Unit
19953  Side Load with 12” Duct Collar Magnehelic Gage: Refer to the Back of this Section
19955  10” Top Load Duct Collar Adapter Static Control: Refer to the Back of this Section
19956  12” Top Load Duct Collar Adapter
Air Conditioning Mixing Box:
19958  Slanted Top with 10” Duct Collar
19959  Slanted Top with 12” Duct Collar
19947  Square with (2) 10” Duct Collars
19948  Square with (2) 12” Duct Collars