* Ducts with cross sectional length greater than 1200mm are recommended to be split into two or more ducts where possible.
* The proposed duct sizes are for cross sectional dimensions of the duct. Linear length is determined by location of the room.
* Disclaimer : The above formulae is Lean Ventures Ltd property. Any liability incurred for use of above formula and details shall not be at any enventuality whatsoever claimed to Lean Ventures Ltd. Use of the formula is a voluntary acceptance of the logic behind it which is unclaimable.