Ignore row about broken sawhorses and make window frames (6)
I believe the answer is:
sashes
'window frames' is the definition.
(I've seen this in another clue)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for sashes that I've seen before include "Moveable window-frames" , "Broad bands worn over the shoulder" , "Fabric bands worn around body" , "They're worn over shoulders" , "Bands around the waist or chest" .)