Warm and stale air out, fresh and clean air in. The Dometic Fan-Tastic Roof Vent Model 1450 exchanges air in a matter of minutes while maintaining quiet operation and energy savings. The core of this fantastic ventilation solution is its modern, modular design and high performance. The Dometic Fan-Tastic Vent Model 1450 is also lightweight, compact, and durable. The Model 1450 Vent seals tightly when not in use. A powerful 12", 10-blade fan quickly moves air out of the cabin. Includes integrated tabs for mounting a Dometic Ultra Breeze cover (not included).• Three fan blade speeds (low, medium, high)• Three-position fan blade reverse switch (OUT-exhaust / OFF / IN-intake)• Manual lift dome• Quiet operation• Fits standard 14" x 14" openings• White high-profile universal base• Will operate with the lid closed• 16.44"L x 18.75"W x 5.75"H Vent seals tight when not in use 12"" 10-blade fan Three-position fan blade reverse switch | Dometic Fan-Tastic Roof Vent Model 1450 in White