Product review (4 stars): The way to dry delicates when you have no space in the house for a drying rack
This fits my dryer perfectly. The back rests on the back of the drum in two indentations; the front rests on the lint screen. The drum spins around at whatever heat I choose. Getting it to set on the back can be a little tricky. Then, putting the items to dry  on it must be carefully done so that it doesn't get knocked off the indentations.  However, this has enabled me to dry the sweaters and such much more effectively.