Identification of a bag

[gmerkt]

A few of these bags came my way and I have no idea what they fit. Anyone know?

Bag measures 8 x 25-1/2 inches flat. In the picture, it is folded in half.

Thank you.

 

[rugsucker]

bag?

Generic for Nutone central vac?Original would have bag installation pictures.

 

[gmerkt]

Now there's a thought that hadn't occurred to me. It is a fairly large bag.

I have zero experience with central vacs.