FIG. 1 is a perspective view of a quick-connect duct attaching device showing my new design.

FIG. 2 is an elevational view thereof;

FIG. 3 is a top plan view thereof showing a latch opening that has been centrally cut to produce a T-latch that is inserted into a latch notch;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right-side elevational view thereof, the left-side elevational view being a mirror image thereof; and,

FIG. 6 is an edge view thereof.

The device is shown broken away in the figures to indicate that it has no specific length.

The building structure and the duct are shown in broken lines for illustrative purposes only and form no part of the claimed design.