NTO spiral ducts are manufactured of galvanized steel. Standard lengths are 3 m and 6 m. Ducts can also be manufactured of other materials and in other material thicknesses.
Spiral ducts meet the requirements for cleanliness class M1 and tightness class D.
We use cookies on the website, which constitutes a personal register according the meaning of the EU Data Protection Regulation, whose Controller is ETS NORD AS, Finnish branch (Business ID: 2239911-2) (hereinafter referred to as the “Controller”). Cookies are small files stored in the browser, which without it’s not possible to separate one user from another.
In this view different types of cookies can separately be accepted or rejected. You may at any time cancel your approval and in any conditions the approval will not be valid for more than 30 days.