Laura Ashley Roman blinds

[Etakie]

Hi, I’m thinking of ordering made to measure Laura Ashley, stacking cassette type Roman blinds in a window that has limited space above it. My question is “does anyone know the height measurement of the cassette?”
I’m trying to avoid blocking out the light from the window when the blinds are open
Thanks

I think they are fairly standard sizes, I have Roman blinds from various makers & the cassettes are at a rough guess no more than a couple of inches in height they are quite compact, but you can’t fold the blind right up ifykwim as they fold into pleats so once stacked you will have the depth of the pleat in front of the window, apologies if I’m stating the bleedin obvious.