GS Terminal Diffuser

Name: GS Terminal Diffuser
Brand: Clean Rooms International

The GS Terminal Diffuser delivers reliable HEPA or ULPA filtration for critical cleanrooms. With gel-seal integrity, roomside serviceability, and a durable steel housing, it ensures leak-free performance, precise airflow control, and easy maintenance—ideal for pharmaceutical, medical device, and other highly regulated environments.

Brand: Clean Rooms International

Categories: HEPA Diffusers

Used in: Pharma/Lab · Manufacturing

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Overview of GS Terminal Diffuser

Engineered for maximum cleanliness, the GS Terminal Diffuser combines robust construction with roomside accessibility. Its gel-seal filter channel prevents bypass, while integrated dampers allow precise airflow adjustment from inside the cleanroom. Designed for demanding pharmaceutical and medical device applications, it maintains consistent, high-performance air filtration without disrupting critical operations.

Leak-Free Gel Seal Design

A precision-molded gel channel on the upstream side of the final filter provides a secure, leak-proof seal. This eliminates unfiltered bypass, ensuring that all air passes through the HEPA or ULPA media. The gel-seal design supports strict cleanroom standards, protecting sensitive processes and maintaining ISO-classified airflow integrity.

Roomside Accessibility for Maintenance

Filters are easily replaced from inside the cleanroom without removing the diffuser from the ceiling. This roomside serviceability preserves ceiling integrity, reduces downtime, and simplifies routine maintenance. The design minimizes disruption to operations while allowing quick, safe access to HEPA or ULPA filters in critical environments.

Durable, Cleanroom-Ready Construction

Constructed from powder-coated 20-gauge steel with a galvanized hood, the diffuser withstands demanding cleanroom conditions. All exposed components comply with cleanroom material and fire safety standards, ensuring long-lasting durability. The robust housing and finish maintain structural integrity while supporting reliable, high-performance filtration in pharmaceutical, medical, and other regulated facilities.

Specifications

Efficiency	HEPA 99.99% at 0.3 micron; ULPA 99.9995% at 0.12 micron optional
Seal	Gel seal channel with knife edge, upstream of final filter
Serviceability	Filter replaceable from roomside; housing remains in ceiling
Media Pack Depth	53 mm
Frame	Anodized aluminum
Housing	20 gauge white powdercoated steel, positively sealed to galvanized steel hood
Inlet Collar	10" or 12" diameter at center of hood
Damper	Perforated disc on threaded rod with support channel; screwdriver adjustable from roomside
Grille	Polystyrene eggcrate in hinged anodized aluminum frame; white epoxy diamond pattern steel; perforated stainless or aluminum optional
Face Velocity	90 fpm average
Initial Resistance	0.47 in w.g.
Access Port	Center of filter element face for upstream challenge or static pressure
Housing Height	7-1/2"
Weight	33 lbs (2x2), 57 lbs (2x4)
Standards	IEST and/or ISO
Options	ULPA filter, 1.5" foil thermal insulation blanket, grille options
Applications	Pharmaceutical, medical device manufacturing, highly regulated industries
Available Sizes	2x2 (20.62x20.62x3), 2x4 (20.62x44.62x3 in)

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