https://wccftech.com/corsair-launches-4000-series-pc-cases-4000d-4000d-airflow-4000x-rgb/

CORSAIR has launched the new 4000 Series of enthusiast PC cases, introducing three new models to its award-winning lineup - the 4000D, 4000D AIRFLOW, and 4000X RGB. The 4000 Series sees a new naming convention for CORSAIR cases, with a Series number defining form-factor and core features, and an identifier to signify each model’s unique characteristics, making it easier than ever for customers to choose a case that matches their build’s priorities.

Whether PC builders choose the minimalist styling of the 4000D, the enhanced airflow of the 4000D AIRFLOW, or the added tempered glass and RGB lighting of the 4000X RGB, they’ll discover a PC case loaded with innovative features. The new RapidRoute cable management system makes it easy and fast to hide your cables out of sight for a clean build, while new fans equipped with CORSAIR AirGuide technology deliver focused airflow for enhanced cooling.