A weather-tight penetration through the roof allowing for ventilation into the insulated area of the outside air.

A pipe that allows air into a drain system to balance the air pressure, preventing water in the traps from being siphoned off.

a nice feature that allows air circulation at night, while preventing condensation from occurring inside the tent

A louver or small dome mounted near the ridge of the roof to allow the passage of air through the attic.

A vent mounted in the top of the gable to allow the passage of air through the attic.

An attic ventilator usually located on the exterior of a roof to allow air to circulate within the attic area. Allows buildup of excessive heat and moisture in the attic cavity to escape.