If the pipe CENTRES (not the gap between the valves) are 560 ..
A 600 towel rail may actually fit, as 600 is the total width
The pipes enter the towel rail normally 15-20mm from the edge of the rail
times 2 thats 30 -40mm
My 450 towel rail has centres of 420
There are some valves that are stepped so give you about 5 mm adjustment ..called Vogue (straight valve)dont know if they are still made coz local builders yard just run out of them
A 600 towel rail may actually fit, as 600 is the total width
The pipes enter the towel rail normally 15-20mm from the edge of the rail
times 2 thats 30 -40mm
My 450 towel rail has centres of 420
There are some valves that are stepped so give you about 5 mm adjustment ..called Vogue (straight valve)dont know if they are still made coz local builders yard just run out of them