The Elta APK630SBCYL/003 ancillary pack is a complete installation kit designed for 630mm ventilation units. This pack contains four anti-vibration mounts to minimise noise and movement, two flexible connectors for adaptable and secure duct connections, two matching flanges for reliable sealing, and two mounting feet to provide stable unit support. Ideal for both commercial and industrial HVAC systems, this accessory pack ensures efficient, quiet, and durable installations.