Allowing 1 ½" of material at each end, what is the cut size for a 20 x 16 flex connection?

To determine the cut size for a 20 x 16 flex connection while considering the 1 ½" of material added at each end, it is essential to start by calculating the total dimensions of the flex connection itself.

The nominal dimensions of the flex connection are 20 inches by 16 inches. These dimensions correspond to the width and height of the duct connection.

Next, since you need to add 1 ½" of material to each end, you must take this into account when calculating the final cut size. For each side (width and height), the addition would mean adding 1 ½" + 1 ½", which totals 3 inches for each dimension.

Starting with the width of 20 inches, adding 3 inches gives you:

20 inches + 3 inches = 23 inches

For the height of 16 inches, similarly adding 3 inches results in:

16 inches + 3 inches = 19 inches

Now, to find the total cut size, you have to consider the perimeter of the dimension that will be created by these additions. The total cut size is typically expressed in linear inches.

Therefore, you sum the adjusted dimensions together:

23 inches (width) + 19 inches