Yes there is no laserglaze for them you would have to cut acetate sheet to fit and fitting the sliders can be tricky . They are only for Mk2Z A B , no MK2C , There is MK2D E F available , but if your looking for the toilet windows for Mk2c get some of the Mk2 z,a,b etches and a MK3 sleeper set that would give you enough frames to do a couple of Mk 2 C coaches . I notice on his site the EEED4007 is now Mk2z-c he maybe they are including the Mk2c toilet windows now ?. Perhaps email Brian at Shawplan I have found him to be very heplful in the past ,