Description: Hos Rationel er vi drevet af detaljen - det har vi været i mere end 60 år. Umagen har bidraget til, at vi er Danmarks foretrukne leverandør af facadevinduer. Hent vinduesinspiration på rationel.dk. Her finder du et utal af muligheder, uanset om du skal renovere din bolig, eller du bygger nyt.
Rationel manufactures energy saving windows and doors of premium quality in terms of both comfort and security. Our continuous programme of research and development ensures that the company always meets current statutory requirements as well as market requirements for design and functionality.