Thanks Kevash. I now understand.
My windows are Georgian - like you do most suppliers centre the glass ? My supplier tells me differences are hardly visible and the vast majoriy of homes even with equal sight line windows have the mullions equal and not the glass.
I am in the process of ordering new PVC double glazed units and am going for equal sight lines throughout (using dummies for non opening windows). My question is will this result in equal glass sizes on each window?
My supplier says it wont - there will be small differences - say in a four...
