---
title: spacing
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nsglasseffectcontainerview/spacing
---

# spacing

The proximity at which the glass effect container view begins merging eligible descendent glass effect views.

## Declaration

```swift
var spacing: CGFloat { get set }
```

## Discussion

Discussion The default value, zero, is sufficient for batch processing eligible glass effect views, while avoiding distortion and merging effects for other views in close proximity.