AstroHood S-III RSR-III HEPA module is room side replaceable HEPA terminal housing. It’s designed to replace HEPA filter without using any tools. Standard and high capacity filters are interchangeable without requiring any adjusting.
AstroHood® S-III RSR-IV
Product Overview
AstroHood S-III RSR-IV HEPA module is a room side replaceable filter complete with housing which is designed to be flexibly installed, and easily maintained, ideal for applications requiring easily replaceable HEPA filters.
Key Features
Fully Room Side Serviceable: HEPA filter replaceable from room side and test port allows for room side filter integrity testing for quick and easy maintenance
Fully Welded Corners: Leak free design prevents unfiltered air from entering the controlled environment
Gel Seal Filter Design: Reduce the risk of any filter bypass with a highly effective seal and superior air tightness
Tool Free Maintenance: Filter and supply air grille are removable without the need of tools ensuring quick and easy maintenance
Aluminium Housing Design: Lightweight aluminium housing material ensures effortless handling and resistance to corrosion
Versatile Installation: The Universal T Mounting Bracket can be repositioned along the housing perimeter, allowing flexible anchoring to the ceiling structure for secure installation
Key Highlights

Typical Applications
• Pharmaceutical
• Biotechnology
• Life Sciences
All New Robust Construction and Leak Free Design
AstroHood S-III RSR-IV robust construction and leak free feature is due to the thicker construction material and continuous welding at all corners. AstroHood S-III RSR-IV comes with multipurpose suspension brackets that can be positioned in any point on the housing perimeter.
Hygienic Design, Tools Free Filter Replacement
AstroHood S-III RSR-IV has a unique design that eliminates the gap between filter and housing and the ceiling after installation. It is designed with tool free filter installation or replacement.
More Media More Airflow, ePTFE Media Available
New patent pending design eliminates the centre divider, which means an increase in filter area, airflow as well as unrestricted airflow uniformity. The ePTFE media option saves 50% energy compared to glass fibre. ePTFE also has an excellent chemical resistance and mechanical strength.
Filter Specifications
| EN1822 | H13 – U17 |
| ISO 29463 | ISO 35 H – ISO 75 U |
| Filter Depth (mm) | 81 |
| Media Type (Standard) | Fibreglass |
| Media Type (Optional) | ePTFE, eFRM |
| Frame Material | Aluminium |
| Separator Style | Hot Melt |
| Gasket Material (Standard) | PU Gel |
| Gasket Material (Optional) | Silicone Gel |
| Gasket Position | Upstream |
| Face Guard Position | Downstream |
| Antimicrobial Available | Yes |
| Recommended Final Resistance | 500 Pa |
| Max Operating Temperature | 70ºC |
| Air Filtration Certificate (Optional) | UL 900, FM 4920 |
Housing Specifications
| Housing Depth (mm) | 135 |
| Housing Material | Aluminium |
| Inlet Collar (mm) | 200, 250, 300 |
| Inlet Diffuser | Prefixed Distribution Plate |
| Top Material (Standard) | Galvalume |
| Top Material (Optional) | Aluminium, Stainless Steel |
| Test Port | Yes |
| Special Size Available | Yes |

