Save BIG when choosing between rectangular and spiral ducts.

Many factors weigh in when it comes to cost calculation of a product.  Transporting products, keeping them in a clean safe environment, labor associated to transport and installation are some of many aspects that come to play in the decision making process. 

Spiral ducts have several advantages when it comes to cost, its rigidity and the strength of the materials when folded into a spiral, gives this additional support that makes the product sturdier yet light and easier to install.

The constant even flow of air in a spiral duct has many advantages over other types of ducts. Due to its continued seem all along the complete duct, it is unnecessary to use flange type of unions to join ducts together.  This minimizes the leakage, loss of pressure and air flow which at the end translates into energy loss and lower efficiency.

Because of the nature of Spiral ducts, the air flow in its rounded interior has less friction than with the cuts and turns with sharp angles found in rectangular ducts. Air moves smoother and with minimal interruption of flow preventing outflow and hissing noise during the operation of the system