Hello, looking for Nu-Air part 52-843, I'm pretty sure by Google Lens search. Your system gives
87-233. part needed is 1.75"long. your part is 1.25" long. Can you confirm for me that your shorter part will indeed function properly in its stead? My main concern is the screw holding the frame together that currently has free space in the long slot of the open back of the stock roller housing. The shorter roller housing may not accommodate the structural screw head without modification and some loss of integrity of the housing. 2nd concern is that my stock part is adjustable by 3 heights. Yours appears 1 setting only. Happy New Year.
Thank you