Roof vent with fan and lights. 12V fan could extract or blow air inside. No speed control (but you can add it yourself). Full vent size fan blows a good amount of air. 4 LED lights work with separate switch (no-lights model available too)
Budget roof vent with a fan. 11" size. Can blow air in and out. Manual lead operation and no speed control. Chep and simple. Keep in mind small size (standard is 14")
Roof vent with fan and lights. 12V fan could extract or blow air inside. Full speed control and remote. 4 LED lights work with separate switches. Motorized lead and rain sensor. Smaller size 28" (standard is 40")
Very advanced roof vent with fan, remote, and wall panel control. Motorized lead, rain sensor, lots of speed options. Full electronic operation, very luxury vent.