Business reply mail (BRM),
Definition of Business reply mail (BRM):
Pre-addressed reply postcard (business reply card), envelope (business reply envelope), or carton that can be mailed free by a responder. The recipient (who is charged a permit fee by the post office for offering this service) pays the standard mailing charges for each piece of mail delivered. BRM is used mainly in the direct mail industry, and also in facilitating the return of defective goods or disposable components (such as laser printer cartridges) for replacement or recycling. See also freepost.
Meaning of Business reply mail (BRM) & Business reply mail (BRM) Definition