A brand of Cast Iron stoves imported from Europe (Belgium?).
This brand was acquired by the parent company of Heat N' Glo and Quadrafire and the brand name is no longer used in the USA, however it is still used in the UK.
Owners manual for model Dovre 500cc Horizon - http://hearth.com/images/uploads/dovre_500ccman.pdf
(our thanks to wireman2511)