The floating mantels are described as solid fir wood. The tall 5‑tier bookshelf is built on a metal frame. One electric mantel option lists MDF/engineered wood in its construction.
They include hidden metal hang brackets for an invisible mount plus two kinds of expansion tubes/anchors intended for concrete and hollow brick walls to provide a secure, concealed installation.
Assembly is listed as quick—about 15–20 minutes. Adult assembly is required and some tools are provided with the items.
The listings show floating mantels in gray, light brown, and black finishes across the available sizes.