Additional roof-window lock DF88 B vs. EK (Art. no. 11900)

  • Suitable for attic windows and for outward opening windows
  • Lock and unlock with the key
  • Suitable for all surface materials, such as wood, PVC and aluminium

Additional roof-window lock DF88 B vs. EK (Art. no. 11900)


  • Solid steel bolt with the ABUS typical claw bolts
  • Sturdy lock case
  • Incl. two keys
  • SKG-certified


  • Finishes: brown, white
Technical drawing
Art. no.: 11900
Level: 8
Article group: 09
No. of keys supplied: 2 keys incl.
Packaging: single carton
Schließung: vs.
color: brown
Additional roof-window lock DF88 B vs. EK
Art. no. 11900

Level: 8
Packaging: single carton

These abbreviations have the following meanings:

  • B/SB: blister packaging for self-service
  • EK: single box
  • gl.: one-key-fits-all (one key for multiple products)
  • vs.: individually keyed (only the keys supplied for that product will work)

These differences lie in the products’ locking operations. If multiple products use one and the same key, it is wise to use one of these locking operations. One key with the same number will then work for all locks. There are no technical differences between the products.

White and brown are always available, but increasingly silver is also being offered in the range. Information about this can be found under each version in the product descriptions.

ABUS uses colours similar to the following RAL colours: white: RAL 9016, brown: RAL 8014, silver: RAL 9006.

RAL colours are standardised colours, whereby a unique number has been assigned to each colour. This ensures exact reproduction of colours e.g. during painting, varnishing etc. and no variations. As such, the colour of the additional window lock or additional door lock can be matched exactly to the colour of the window frame.

Skylight locks

Tried and tested over many years – the "DF 88" attic window lock for skylights and all windows that open outwards. Burglars will not find their way in through your roof. ABUS – security for your company – from the basement to the roof. The new trend for "mountaineering" For years police statistics have shown that burglars are increasingly climbing up to higher storeys or even on to roofs to break in. Attic windows are often unsecured and ...
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