![Surprised :o](./images/smilies/icon_surprised.gif)
No instructions came with it but basically from what I can work out the elastic stays on the mesh and the black trim rolls over flat against the side covers.
Drag Factor is affected and I needed to move the damper from a 6 to a 7 to bring it back up into the 160's.
It REALLY moves the air and a big benifit is the harder you row the more cooling air you get. Just about all the energy you produce is going into moving air (currently I'm averaging 240W which is a BIG fan) and the results are very good.