Need to know what kind of window you have currently, how the blinds are mounted, and what type of replacement is proposed.

If you have a wood window currently and are doing and insert, most blinds are mounted to the casing or to the interior stop. In that case, the brackets may require re-locating but they should be okay and undisturbed.

I've recently replaced 20+-year-old Pella Pro-lines with Marvin Clad Ultimates (both wood-clad windows). They are full replacements, not inserts. My old honeycomb blinds do not fit the new windows; they are an inch or so too wide for the new windows. I'm not sure if that would be the case though if I'd stayed with the same manufacturer for the new windows.

(BTW, I love my new Marvin Clad Ultimates - they are a night-and-day improvement over the Pellas. Especially noticeable with the extreme cold we've had.)

This post was edited by Mrs_Nyefnyef on Sun, Jan 26, 14 at 11:20

Great choice in a window.

Sorry about the blinds not fitting but this should have been discussed by your contractor prior to the replacement as a default.