Lid with 3 connections dia. 50 mm, or 2 connections dia. 70mm
Application
Lid equipped with 3 holes with dia. 50 mm, or 2 holes with dia. 70mm : this fitting is often used to make a shunt on a rectangular duct by means of a T-piece to a grille with a maximum air flow rate of 50 m³/h (three flexible ducts with dia 50 mm or 2 flexible ducts with dia 70mm).
For the correct usage of this piece, a PP connection piece, type MDF is required.
Composition
This lid is made of KTL coated steel; thanks to this KTL coating, the lid is resistant to the corrosive elements of the cement screed (compression strength 80 kg/cm²)
The KTL coating is also dust and moisture repellent, which makes it very appropriate for ventilation applications