The model is made in Corona12, all materials in Corona LegacyMtl
In CoronaRender versions 6 and lower, CoronaLegacyMtl=CoronaMt

Dimensions - millimeters
Pivot is set at the base of the object
Reset Xform
There is a UV unwrap

Cushion sizes:
134 cm/ 15cm
50 cm/ 15cm

The model is made for smoothing, stack collapsed.
The smoothing modifier is enabled (viewport display - 0 iterations, render - 1 iteration)

Polys: 280780
Verts: 280315

The archive contains -

-max 2017 corona
-obj (MeshSmooth needs to be applied - 1 iteration)
-fbx (MeshSmooth needs to be applied - 1 iteration)
-mtl
-textures
-material library

For CoronaLegacyMtl, a version of Corona Renderer no lower than 1.5 is required, as the maps are designed for PBR (roughness-metallic) usage.