Sliding doors that retract into the wall or slide behind the wall usually require professional.
Doors to cover washer and dryer.
Sliding door install a small sliding door across the entrance to your stacked washer and dryer.
If you have a stacked washer and dryer set design your cabinet to cover both of them with one large door that can be opened to reveal the front of both.
Use a hall closet or linen closet for your washer and dryer and cover them up with bi fold doors.
For a side by side front loading washer and dryer set two separate doors work best.
The benefit of bi fold doors as that they both open at the same time and fold out of the way allowing the whole closet to be accessed instead of just one side at a time being accessible with sliding doors.
Just another option kivaallgood.
Interesting use of doors to cover the washer and dryer with a counter on top maybe in the hallway in the upstairs.
Heather bullard hid her washer and dryer with linen.
Once each door is mounted to each side you can put your 3 sided box back over your washer dryer for another fitting for any final adjustments.