Piece of an wooden alter with IHS carved in wood you want to install it in a powder room as wood paneling Is this offensive?

It is possible that it would offend some given that it is an abbreviation of the name Jesus, combined with the fact that it has been part of an important (sometimes sacred) feature of some Christian's worship. Possibly the risk of offence would be lessened if placed in another position, such as a living area or hall.