Does anyone know what profile to use to get a concrete wall instead?
All the concrete walls that I have found so far are tied to specific airports as Model.mdl's. Example, the wall that Miami Airport uses running parallel to the street is
mia_funkywall {ecb596e3-d333-427b-b9dd-e28e4db91f01}
All the walls I have checked are not linked like a fence but either modeled or placed end to end like Scenery. There are some Generic walls that are not tied to the Region/Folder/Dir.
gen_fencewhite01 {d206a21b-06ba-4a90-a142-70694606d4ab}
gen_fencewhitelong01 {0336972f-d690-4c3d-b97f-45da2029d29b}
gen_fencewood01 {5459decd-b693-4ca8-866d-abb4d119cdea}
gen_fencewoodold01 {af827612-600b-4195-b39a-cb9110d0e0d9}
gen_fencewoodold02 {b0e78fe3-a445-4f94-b036-9f014cde0c93}
gen_fencewoodoldlong01 {e67ef3ee-fec2-4e75-b987-e43f45c55294}
gen_wallbricklarge01 {ff9ac16f-4125-483b-9bda-feb787e5a3a0}
gen_wallbrickpillar01 {99cb8a79-0729-4784-9722-5fe4fc6785cc}
gen_wallbricksmall01 {9159b87c-54d1-4a21-8822-ab6b7efc6d1f}
gen_wallrock01 {bee8035b-5ab4-40bc-825d-8978e6a9296e}