Gemini Double Door Locking System

composite, timber and stable doors

For Double and Stable Doors


  • For timber and composite double doors, as well as stable style doors
  • PAS 24 tested and Secured by Design licenced
  • Very simple to fit ‘bolt on’ design makes fabrication easy
  • Tapered top and bottom deadbolts offer high security and compression
  • Additional hook bolt option is available
  • With double operating handle option or dummy external handle to slave
  • Split spindle option for use on front door applications
  • Easily reversible latch as standard
  • 304 stainless steel faceplate and slave lock offers high corrosion resistance
  • Comes with a 10 year guarantee

Technical Data:

Corrosion Resistance
BS EN 1670 Grade 5 for 480 hours

Cycle Operation
Cycle tested to 100,000 operations


Top and Bottom Hook
CZ122 brass stamping

CZ122 brass stamping

304 austentic stainless steel

Zinc and clear passivated

Carrier Extrusions
White or polished anodised silver and gold

For maximum security the XL
Lock can be used with the
Kinetica 3 star BSI Kitemarked
TS007 cylinder.

The Gemini Double Door Locking System includes a 3 deadbolt multipoint lock for use on timber or composite double doors, as well as stable style doors. The master lock, with its 3 deadlocks, interlocks with its matching slave unit, locking the top and bottom shootbolts in place to create tight compression and a secure seal.

Both master and slave lock are either mounted on hard wearing aluminium extrusions or directly on to the timber sashes. This ingenious system works by using a hard wearing aluminium extrusion which is fitted onto the edge of each door. It is fitted to both the slave and master unit, and when the door is locked it forms a rebate, meaning that the two doors overlap with each other, sealing the two doors. With this cassette system all you need to do is screw Gemini to the door – making it the best system to use for easy fitting!

The Gemini Double Door Locking System now comes in a universal kit that can be cropped down to size in-house. This means that for the first time you can hold the Gemini on shelf for immediate use. The kits have everything that is needed to cut the locks and keeps down to the size which is needed.

Gemini has achieved both PAS 24 and Secured by Design approval. It is suitable for both 44mm and 56mm door widths and is available in a range of hard wearing finishes.

Product Dimensions:

Product Codes:

Old Product CodeNew Product CodeOpeningFinish
GM102-10-2150FULLEX-GEMINI-RH-WHITERight HandWhite Painted
GM102-40-2150FULLEX-GEMINI-RH-SILVERRight HandSilver Anodised
GM102-80-2150FULLEX-GEMINI-RH-GOLDRight HandGold Anodised
Old Product CodeNew Product CodeOpeningFinish
GM100-10-2150FULLEX-GEMINI-LH-WHITELeft HandWhite Painted
GM100-40-2150FULLEX-GEMINI-LH-SILVERLeft HandSilver Anodised
GM100-80-2150FULLEX-GEMINI-LH-GOLDLeft HandGold Anodised


Fullex Multipoint Lock Brochure

Fullex Repair Case Brochure

Fullex Gemini Tech Sheet

Fullex Gemini Manual

Fullex Direct Fix Instructions