Can the 12 in. Galvanized Steel Half-Round Dormer Vent with Soft Aluminum Flange be used for a shingle roof?

It may be possible to install the Steel Half-Round Dormer Vent on a shingle roof.

The 12 in. Galvanized Steel Half-Round Dormer Vent with Soft Aluminum Flange is intended for Spanish Tile roofs. However, if you flatten the soft aluminum flange to the deck it should be usable.