# Reduction

> Transition piece connecting two casing or screen sections of different diameters.

> **Reduction** = `object`

Transition piece connecting two casing or screen sections of different diameters.

## Properties

### diam\_from

> **diam\_from**: `number`

Diameter at the top of the reducer in millimeters.

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### diam\_to

> **diam\_to**: `number`

Diameter at the bottom of the reducer in millimeters.

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### from

> **from**: `number`

Start depth in meters from ground level.

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### to

> **to**: `number`

End depth in meters from ground level.

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### type

> **type**: [`OpenVocab`](/core/api/type-aliases/OpenVocab)\<[`ConstructionMaterial`](/core/api/type-aliases/ConstructionMaterial)\>

Reducer material. Recommended values: [CONSTRUCTION\_MATERIALS](/core/api/variables/CONSTRUCTION_MATERIALS).