The Blind Plug 7 is the cheapest item from this partsfiche.
In this schematic the "Protection, T/gate" is used most often.
Parts such as the Grommet: Seal 30mm, Door Hole, Blind Plug 7, Seal, Door Hole, Cush, Trunk Fr are included in the Civic 1997 (v) 4dr Lx Factory A/c (ka,kl) Grommet parts fiche.