A container for flowers and such includes a stackable holder with upright walls, a carrier supported on the walls, an upper holder being placeable on the carrier, and also A ventilation element located in at least one of the walls and also at the top of the carrier. Plural feet extend from the channels and terminate with mounting plates enabling securement to a mounting deck; as, for instance, of a fire truck. In one embodiment, the polymer is a polyester and, more preferably, a polyester-urethane polymer. The initial HDLC-frame is sufficiently short that at least an essential portion of the frame can be stored in a receive buffer of the interface circuitry.