An RFI is common and accepted practice for a subcontractor or supplier to use an RFI to state his/her concern related to the omission or misapplication of a product, and seek further clarification of the building owner's intended use or their official acceptance of the specified product. It is also acceptable for the subcontractor to use an RFI to call attention to an inferior product that may not meet the building owner's needs, and use his/her expertise to recommend the better/correct product.