A technical overview of the Constant Tension Retractable (CTR) Roof System by NP Structures, showing key structural dimensions and the integrated constant-tension retractable mechanism. The system is designed to allow the roof to be positioned and held securely at any point along its travel, enabling precise control of light and airflow in professional greenhouse environments.

A rendered overview of the Constant Tension Retractable (CTR) Roof System by NP Structures. The system is designed to open from the ridge downwards and can be held securely at any position along its travel, enabling precise control of light and airflow for professional greenhouse applications.