m+a

Your reliable manufacturer of high-quality air ducts and system assemblies
Oval tubes , spiral duct tubes and fittings made of hot-dip galvanized sheet metal
Our unique oval air ducts are characterized by low installation heights and optimized flow characteristics. Custom-made fittings and simple plug-in connections enable short installation times and sophisticated surface mounting with optional powder coating.

Our oval tubes are stable enough to be cast in concrete. The rounded shape of the air ducts reduces the build-up of dirt.