Retention restrictor

• For FLECK flat roof drains, which are to be used in the retention area
• Drainage property according to design requirement
  • The property-specific drainage calculation can be carried out by FLECK free of charge
• Available for flat roof drains:
  • DN 70
  • DN 100
  • DN 125
  • DN 150

Retention box

• Protective housing for retention restrictor
• Hinged cover, box height can be increased as required
• Made of painted aluminium
• Incl. suitable pop rivets for connecting the individual elements
• Available as:
  • Complete set (basic element + cover)
  • Basic element with 4 feet
  • 50 mm extension element
  • 100 mm extension element
  • Cover element