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Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

ESD-202Greenheck ESD-202 drainable louver: equipment preview
General arrangement objects

Greenheck ESD-202 drainable louver

Coordinate the louver opening and frame with the surrounding wall and duct connection. Keep the drainage route and access to any fitted screen visible in the installation detail.

Drawing use
GA
Application
Equipment layouts
Reference family
Manufacturer

A distinction that matters

Nominal wall opening area is not the effective free area for airflow calculations.

Full reference
GAVentilation intake louver: equipment preview
General arrangement objects

Ventilation intake louver

An intake louver forms a selected air-entry interface in a wall or enclosure.

Drawing use
GA / SLD
Application
Equipment layouts
Reference family
Manufacturer

A distinction that matters

Overall opening area does not equal the louver's effective free area.

Full reference

Follow the full entry for source drawings and the appropriate standard or selected product. Equipment previews show a manufacturer drawing where available, otherwise a 3D thumbnail.

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