Snap! I have that hayrack! Same colour too. Actually I've had 3 :lol: I end up chucking them everytime I move as I dont have room, and then buying another at the other side! They're really good, big holes to get the hay out of, Anna can get her whole face in the slit one, and Barney doesnt attack it and get frustrated like he does with other racks. It keeps the hay clean, but gives them a bit of a chance to forage through and pick the good bits still.
You could attach it with the sticky pads on the back Aly&Poppy? I used sticky-back velcro on mine though so I can take it off for cleaning. In the past I've just tied it onto bars with string.