Brittany P. July 11, 2018 16:26 Updated If your circular vent has horizontal or vertical air slots, it should work just fine. It grips tight and can be rotated in any direction. Please make sure to test with and without your smartphone before using! Related articles Does the phone block AC Flow when using an air vent mount? Will the dashboard mount damage my dashboard? Can I use my CD Player while using a CD Slot Mount? Will the suction cup on iOttie Mounts melt when the cars dashboard gets hot in the summer time? The tightening nut/ screw has broke on my mount. What do I do? Comments 0 comments Article is closed for comments.