90s Orange P7 sizing

[thinkvisual]

Does anyone know if Orange P7s ever had any other sizes than 17/19/21 in the early 90s ? I have been told about a 90's P7 frame that measures 18" but I can't see any in that size looking back through catalogues.

 

[brocklanders023]

They were the standard m/l/xl measurements from centre to top. They also did a 15” small in some models.

Don’t think I’ve seen an 18” p7 although I had an early clockwork that was and from memory the Aluminium O was even numbers?