The 3 series  Fearless espagnolette mechanism from Mila is designed to fit standard and reduced depth eurogrooves. It provides smooth operation and effective sealing for all types of casement double glazing windows.

This mechanism has been discontinued by the manufacturer so some sizes are now unavailable.

However, alternatives are available HERE

Available with 19mm or 22mm backset

•           GR11 Espag window locking mechanism -110  mm long    
  
•           GR28 Espag window locking mechanism-280 mm long      
  
•           GR40 Espag window locking mechanism-350 mm long      
  
•           GR60 Espag window locking mechanism -550 mm long     
  
•           GR80 Espag window locking mechanism -750 mm long     
  
•           GR100 Espag window locking mechanism -950 mm long    
  
•           GR120 Espag window locking mechanism -1150 mm long   
  

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Information from the manufacturer

The 3 Series espag Locking mechanism is designed to fit standard and reduced depth eurogrooves. It provides smooth operation and effective sealing for all types of casement windows.

• Available in 19mm or 22mm backset with 9mm cams
• Brass mushroom cams compression adjustable +/-1mm
• Faceplate in steel
• Lockcase in zinc diecast
• Fits standard and reduced depth eurogrooves
• BBA approved product