---
title: "MTFillExtrusionLayer.opacity | Mobile sdk | Mobile sdk android | Android"
description: "opacity"
---

# MTFillExtrusionLayer.opacity

var [opacity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.fillextrusion/-m-t-fill-extrusion-layer/opacity/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

The opacity of the entire fill extrusion layer. Optional number between 0 and 1 inclusive. Defaults to 1.