I have the Genuine Honda Accessory Tall Windscreen with Vent. It measures 16.5” from the rubber bottom lip to windshield tip. Being 5’11” with 32” and wearing a 1/2 helmet there is very little to nil buffeting. I believe part of the secret is leaving the vent partially open allowing some air to flow through and block the buffeting air breaking over the top of the windshield.