I had the same problem I took a small sample to the Watford timber co & they made me an exact copy in MDF the only problem it was expensive about £550 for 2 large rooms they did have cheaper similar sized samples but I wanted an exact copy.
Neil
I a'm a very fussy D I Y'er can any one inform me how to work out the spacing on the spindles over different distences, I know they have to be 100mm apart I a'm up to this stage,
if you have any questions on timber & fixing prices do not hesitate to ask
regards Neil