IAF – Flush rectangular floor/tiered-seating diffuser
Flush-mounted and walkable design
IAF is a low velocity air diffuser developed for flush mounting in floors and tiered seating. It is used in installations where a flat diffuser without protruding details is desired, such as theatres, cinemas, offices and auditoriums. The diffuser can be connected to ductwork or via positive pressure and is mounted completely flush with the floor surface for a discreet and safe installation.
The IAF series is available in three standard versions covering different types of installations and airflow requirements:
IAF 70 – With a height of only 70 mm, this diffuser is easy to place even in low tiered seating. Equipped with adjustable REPUS® nozzles that provide an even and flexible air distribution pattern. Standard colour RAL 9003 gloss 30% (other colours available on request). Available in four widths.
IAF 0606 – Intended for raised access floors in offices and data centres. Adapted to the floor thickness, e.g. 600×600 mm panels or pressurised wooden floors as in the installation at SEB’s head office in Solna.
IAF 0401 – Suitable for theatres, cinemas, assembly halls and VAV systems. The diffuser works effectively even at very low airflow rates.


Technical Specifications:
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Adapted to project requirements and floor construction
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Design in galvanised sheet steel
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Powder-coated RAL 9003 gloss 30% or to order
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Available variants: IAF 70, IAF 0606, IAF 0401
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REPUS® nozzles provide even, draught-free air distribution
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Works in both CAV and VAV systems
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Energy-efficient design with long service life
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Manufactured from recyclable materials
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Mounted flush in floor or tiered seating
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Low installation height – also suitable for low installations
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Maintenance-free diffuser – only simple wiping when needed
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Adjustable height for different floor constructions
AMA Text for Design
TDxx REPUS® low velocity air diffuser for flush mounting in floor, type IAF or equivalent.
- The diffuser shall have internally mounted adjustable REPUS® nozzles for optimal air distribution
- Material: Galvanised sheet steel
- Colour: Powder-coated, white RAL 9003 gloss 30% or to order
Product designation
IAF.bbbxhhhxddd
Use our configurator to size IAF diffusers based on your project specifications.





Discreet installation
Completely flush mounting without protruding details.
Flexible models
Three variants for different floor types and airflow requirements.
Efficient low velocity technology
Even air distribution even at low airflow rates.