Here we have Heavy Duty No.10 moulded teeth with double metal sliders.

 The thickness of the teeth  when closed is  ABOUT  9 mm. AND THE TAPE  IS 1.5 CM each side, so 4 cm in total

Please note that the zips are opening at one end NOT FROM BOTH, IT WORKS JUST LIKE IN A JACKET  

It ALSO COME WITH A SINGLE REVERSIBLE SLIDER WHICH DOES THE SAME JOB  AS THE  DOUBLE SLIDER, WHICH MEANS YOU CAN OPEN THE ZIP FROM INSIDE OR OUTSIDE BUT ONLY WITH ONE PULLY.PLEASE SEE PHOTOS.
 
Specifically designed for Marine and outdoor applications, BOAT COVERS, SALT UV RESISTANT, TARPAULINS, GAZEBOS'

 Available in 4 COLOURS and  sizes,30 cm,46 cm,61cm,76cm, 91cm,107cm,122cm,137cm,152 cm, 167cm,183cm,198cm,213 cm, 229cm,244cm, 259cm, 274cm, 290cm, 305cm,334cm , these are in stock, I can supply other lengths 

 Many Thanks Jose Miguel