[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [LayerTree](./puppeteer.protocol.layertree.md) > [ScrollRect](./puppeteer.protocol.layertree.scrollrect.md) ## Protocol.LayerTree.ScrollRect interface Rectangle where scrolling happens on the main thread. Signature: ```typescript export interface ScrollRect ``` ## Properties | Property | Type | Description | | --- | --- | --- | | [rect](./puppeteer.protocol.layertree.scrollrect.rect.md) | [DOM.Rect](./puppeteer.protocol.dom.rect.md) | Rectangle itself. | | [type](./puppeteer.protocol.layertree.scrollrect.type.md) | ('RepaintsOnScroll' \| 'TouchEventHandler' \| 'WheelEventHandler') | Reason for rectangle to force scrolling on the main thread |