Securistyle Defender Standard

A high performing friction stay, the Defender Standard achieves enhanced weather sealing by means of an extended enclosed end cap and asymmetric location system for reliable weather sealing to BS 6375-1. The handed 'profiled' vent arm further enhances weather sealing.

Smooth operation is ensured by a patented lipped slider, as well as easy friction adjustment without metal to metal contact.

The Defender has a long and reliable working life tested to 30,000 cycles. A unique patented, robust cam friction device eliminates any risk of friction screw misuse.


Technical Data:


Available in 10" to 24" for top hung and 12" and 16" for side hung

Available in 13mm or 17mm stack heights


Finish options:

The Defender Standard friction stay is available with a 10 or 12 year guarantee, depending upon the material selection:

  • Standard ferretic steel to BS EN 10088-2 Grade 1, 4016 offers a 10 year guarantee
  • Austenitic stainless steel to BS EN 10088-2 Grade 1, 4301 for enhanced corrosion resistance offers a 12 year guarantee (available to order only)


Top Hung Highline Highline        
13-14mm 16-17mm 17-18mm Max Vent
Weight (kg)
Min Vent
Height (mm)
Max Vent
Width (mm)
Opening Angle
(+/- 2.5°)
EDT10 EDT10H6 EDT10H7 16 275 400 80°
EDT12 EDT12H6 EDT12H7 20 350 550 80°
EDT16 EDT16H6 EDT16H7 21 500 780 80°
EDT20 EDT20H6 EDT20H7 26 700 1100 50°
EDT24 EDT24H6 EDT24H7 40 850 1300 37.5°
Side Hung       Min Width (mm) Max Width (mm)  
EDS12 EDS12H6 EDS12H7 22 300 600 60°
EDS12L EDS12H6L EDS12H7L 22 300 600 60°
EDS12R EDS12H6R EDS12H7R 22 300 600 60°
EDS16 EDS16H6 EDS16H7 24 400 700 60°
EDS16L EDS16H6L EDS16H7L 24 400 700 60°
EDS16R EDS16H6R EDS16H7R 24 400 700 60°


Click thumbnail image to load images viewer


Click above to make an enquiry or call

order line: 01733 393 330

Please enter a valid name

Please enter a valid email address

Please select the nature of your enquiry

Please select a valid product Please enter a message
Please agree to our data terms before submitting your enquiry.
Please enter a message
Please agree to our data terms before submitting your enquiry.

Please provide us with your address below:

1 -

Enter your postcode and select your address

2 -

Enter your house number

(Optional) - Click here if you want to check the computed address or make changes directly.

Street address
Please enter a valid street number
Please enter a valid address
City Postcode
Please enter a valid postcode
Please agree to our data terms before submitting your enquiry.

Thank you

We will be in touch within 1 business day.

Click the button again to send another enquiry