Please help, I have door frame sizes of 812mm x 198.5, I cannot get doors to fit this size anywhere, the doors I have at the moment are 810mm 197.5mm. I want to put in the standard 6 panel doors but cannot find any to fit. Can anybody advise as to what size wood etc i would need to extend the door frames so that the standard 762 x 1981 doors would fit. Many thanks. Gill.