:: The Rosada Sub Frame :: What is it?

It is a piece of metal (zinc-plated) split in 3 parts or timber, which is assembled on the building site in the rough opening.

The metal subframe is shaped differently according to the different product series by Rosada.

This is because one of the main purposes of the subframe is to allow a PERFECT FIT of the window frame to the rough opening during installation.

What are the advantages