RAL tested. HARMONY is a classic that satisfies many requirements. The window handle matches state-of-the-art architectural environments as well as windows for old half-timbered houses reproduced true-to-style. Its distinctive, charismatic contours and timelessly attractive appearance make their mark from the very first moment on. HARMONY is available in the colours bronze, champagne, RAL 80149 grey brown, RAL 9016 traffic white, silver and titanium.