Gemini Double Door Locking System


For Double Door


  • For timber and composite double 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
  • 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 Gemini
Lock can be used with the
Kinetica K4 3 star BSI Kitemarked

The Gemini Double Door Locking System includes a 3 deadbolt multipoint lock for use on timber or composite double 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.

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.

Kit Components:

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 Repair Case Brochure

Fullex Gemini Manual

Fullex Direct Fix Instructions