HVAC Duct Transition Box and Necks

This image displays essential components used in HVAC (Heating, Ventilation, and Air Conditioning) ducting systems: a rectangular AC transition box and a selection of duct necks. The transition box is designed to connect a rectangular air supply grill (like the ones seen previously) to the main ductwork, often changing the shape or size of the airflow pathway. The individual “necks” shown – one round and one oval – are specifically designed to provide a secure and efficient connection between the transition box and flexible or rigid ducting. Made from a durable, dark-colored material (likely plastic or galvanized steel), these pieces ensure optimal airflow and easy installation, crucial for creating a complete and effective air distribution system in residential, commercial, or marine environments.