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KD 8400 Size 4 Heavy Duty Floor Spring

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A highly efficient heavy duty floor spring range, which is suitable for most applications. Particularly suitable for schools and hospitals where there is constant usage.

Testing & Standards

  • CE marked against EN 1154
  • Included in successful fire test to EN 1634
  • Safe in use
  • High corrosion resistance


Closing Force (EN Size) 4
Door Size (max)  
Width (mm) 1100
Weight (kg) 150
Body Dimensions  
Length (mm) 306
Width (mm) 108
Height (mm) 40
Mechanism Cam
Power Shoe Bracket No
Angle Of Opening 130°
Non Handed Yes
Power Adjustment By Spring No
Power Adjustment By Position No
Adjustable Sweep Speed Yes
Adjustable Latch Speed Yes
Adjustable Backcheck Yes
Adjustable Delayed Action No
Hold Open Mechanism (not suitable for use on fire doors) Yes
Single Action Accessories Yes
Double Action Accessories Yes
Spindle Extention Yes
Cover SSS, PB