The Saddle Vent was invented by a professional tank cleaner to make it easy for his workers to enter and exit a confined space. The Saddle Vent takes up only 3 inches in a manhole and functions as an air conduit. Eight inch air hose is attached to both ends of The Saddle Vent and placed in the entry access hole, thus eliminating the need to remove the hose each time entry or egress is required. The Saddle Vent revolutionizes confined space operations by offering a level of safety and productivity that has never been available. One model is available for industrial manhole work, and a specific model is designed for doing tank entry work.