RD4FR – Rytons Flat Channel Horizontal Adaptor (110mm x 54mm / 100mm Dia. Range)

General Details

RD4FR – Rytons Flat Channel Horizontal Adaptor (110mm x 54mm / 100mm Dia. Range)

  • Connects an appliance to 110mm x 54mm rectangular ducting.
  • Use Pipe/Hose Connector RD4CONN to connect 100mm Dia. rigid pipe.
  • Female component with female collar.
  • For applications requiring lower extraction rates such as bathrooms, WCs and utility rooms.
  • Suitable for use with fans with a maximum output of 250m³ per hour.
  • Operating temperature range -15ºC to 60ºC.
  • Meets UL94 HB flammability standard.


  • Female component with female collar 100mm Int. Dia. x 20mm D.

Compatible Components:

  • Rytons Flat Channel Duct 1m L RD41M.
  • Rytons Flat Channel Duct 2m L RD42M.
  • Rytons Pipe/Hose Connector RD4CONN.
  • Rytons Pipe/Hose Connector with Damper RD4CDAMP.
  • Rytons Rigid Pipe 358mm L RD435RND.
  • Rytons Rigid Pipe 1m L RD41RND.
  • Rytons Rigid Pipe 1.5m L RD415RND.
  • Rytons Rigid Pipe 2m L RD42RND.

Free Area:

  • 5,424mm² (54.24cm²) per unit.

Minimum/Maximum Operating Temperatures:

  • -15ºC to 60ºC.

Pressure Loss:

  • 8 l/s: 0.80 pa.
  • 13 l/s: 3.00 pa.
  • 21 l/s: 8.50 pa.
  • 30 l/s: 14.00 pa.
  • 60 l/s: 58.00 pa.
  • 120 l/s: 232.00 pa.


  • White high impact polystyrene.
  • Manufactured in compliance with Domestic Plastic Ductwork Specification DW/154.
  • Meets UL94 HB flammability standard.

Handling Information:

  • Individual weight: 90g.

NBS Specification:

Rytons is proud to be a family run business and British manufacturer since 1972.

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