Vent Tools

Lindab Vent Tools is a collection of useful tools for the ventilation business.

Duct Calculator

The Duct Calculator provides extensive computing functions for dimensioning of round and rectangular ventilation ducts. The input of the desired size (volume flow, air velocity or dimension) can be selected. By entering text or slider the requirements are defined and determined the required size and the pressure loss per meter.
Offset Bends / Offset T-Piece - Bend
Using the offset calculators you can calculate pipe lengths and center distances of various bend and bend – T-piece combinations. Due to the real Lindab component dimensions intermediate lengths can be accurately pre-fabricated on site.
Length of insulation
Calculation of the length and area of insulating material for certain round and rectangular ventilation duct dimensions facilitates the cutting blanks on building site.
Roof Angle
The determination of roof angle to order roof transitions presented itself as frequent obstacle. By entering a few building mass calculates this tool the angle of the roof.
Air Capacity
The Air Capacity calculator calculates the dry cooling or heating power, the required air flow or the temperature difference for the given requirements.
K-value search and calculation includes a selector for the correction factor of diffusers, valves, chilled beams, plenum boxes and measurement devices, used to calculate the air flow via the difference pressure from the measurement unit inside the devices. The feature contains as well a calculator to calculate the airflow with the selected k-value and the measured pressure, or to calculate the pressure you should measure to receive a specific air flow.





Available in


Italy (English version)
Poland (English version) 
Czech Republic 
United Kingdom