---
title: verticalBlankingExtension
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.13+]
path: iokit/iodetailedtiminginformationv2/2870095-verticalblankingextension
---

# verticalBlankingExtension

## Declaration

```occ
UInt32 verticalBlankingExtension;
```