Full wall slides

i have the same set-up with the fridge in the slide and it has taken me quite some time to stop the fan from vibrating. hopefully its solved. there is not a lot of room to mount it between the fridge and the sidewall and not a lot to screw into. i got it pretty tight at first but traveling over the road took care of that. this last fix i put 2in velcro and re-screwed it. i also put a wedge on the other side for the banging around. i was also told to watch out for the wires getting burned on the coils, so i also attached the to the sidewall also. good luck, i hope i've solved my problem and helped someone else out.