Very happy with this magnetic barrier, works great with my roborock e2, thought I might need more but just ordered one to make sure it worked well and absolutely fine and it comes with double back tape, many competitors offer only one barrier and then you have to buy separate tape, great product, great price about $10 less than roborock tape, had a lot of work on the front and side of a dresser, backrest two- Seater sofa, the corner and part of the back of another sofa is enough to leave me about 2 feet for a barrier in the hallway when I need it.