The floor mounted low level radiators can be positioned almost anywhere and are particularly suitable for areas where wall fixing is impossible (alongside floor to ceiling glass windows).
Acova Vuelta Plinth:
https://acova.fr/radiateur-decoratif-chauffage-central/vuelta-plinthe-38300
Laurens Radiatoren – Spiralix RAO2 Horizontal:
https://laurens-radiatoren.nl/spiralix-rao2-horizontal-spiraalradiator-nl
Purmo Ventil Compact:
https://www.purmo.com/ru/produktay/stalynaye-radiatoray/purmo-ventil-compact.htm#tab-osnovnyye-tekhnicheskiye-usloviya
Varmann MiniKon:
https://varmann.ru/catalog/convector/minikon/typesizes/