yes ... the BT is measured in projected area(projezierte fläche) and the naish is measured in flat area (ausgelegte grösse)
some kites you could use (that would fit) are:
projected sizes:
-wipika airblast 11.8
-cabrinha BT 12.2
-airush lift 12.2
-takoon skoop 10.5
flat sizes:
-naish X2 14 or 16
-naish arx 15.5
-rrd type 4.1 14.9
-f.one mach1 15.1
-north rhino & toro 16
and many more
