The supports serve as headrests armrests or low backs that divide the couch into central seats for two and separate seats on the sides.
https://www.luteca.com/seating/dorcia-daybed-1-mezkb-4x76p 

Dimensions: 82 x 213 x 58cm
Polygons: 458 930

* When using OBJ apply MeshSmoth with 2-3 iterations.
* “Who works in the V-Ray version lower than 3.1 be careful in the materials in the BRDF section there is Microfaset GTR (GGX) if your version is lower than 3.1 then the BRDF field will be empty. Choose Blinn Phong or Ward – which is preferable for you »