Subaru Legacy BN/BS (2015-2019) Owners Manual: To take out the stowed cover housing

Stowage of the cargo area cover

The cargo area cover can be stowed in under the cargo floor. To open the lid, pull the handle up To keep the lid open, hang the hook (provided on the back of the lid) on the rea ...

To install the cover housing

Insert both ends of the cover housing into the retainers. Make sure to fix the front part of the cargo area cover behind the rear seat. ...

Other materials:

Rear gate (Outback) - if the rear gate cannot be opened
In the event that you cannot open the rear gate by pressing the rear gate opener button (all models) or using the power rear gate (if equipped), you can open it from inside the cargo area. Remove the access cover at the bottom-center of the rear gate trim using flat-head screwdriver. ...