Underdash A/C - Heater vent hose question

[morglan]

Does anyone know the size (length & diameter) of this piece? (It is a length of "hose" that directs the flow of the heater-A/C in a truck w/ A/C, that connects under the dash.)

My truck is missing this piece, so I've never seen one, but I'm assuming it is similar to the type of hose used for dryer vents in a house.

Is this part readily available at the local parts store? If not, is there a suitable replacement that I could find at Lowe's or Home Depot?

Thanks!