The smallest size, the 4″, is very cheap when compared to its’ larger counterparts. It costs $12 per roll of 25ft which means that you will get 50 linear feet with every roll you buy.
The 6″ flux duck is more expensive than the 4″ but it still costs less than half of what 10″ & 14″ cost. This makes it a perfect choice for mobile homes that are medium in size or smaller – your utility bills won’t be too high!
8″, 10″ & 16″ all have the same price-point at $23 for a 50ft roll. These three sizes are great choices if you want to save money on your utility bills but still make sure that your mobile home has the perfect amount of airflow.
The 14″ flux duck is more expensive than 8″, 10″ & 16″. It costs $33 for the same length which means that it is almost twice as expensive when compared to its counterparts.
However, if you want maximum performance out of your AC unit, then the 14″ might be your best choice since it offers better durability and a higher airflow rate than any other size on this list.