Based on this product's specifications, here are some alternatives and similar models
Chimney Roof WADEX CHIMNEY ROOF 101 — Diameter 160 mm
Summary description:
Roof chimney component WADEX CHIMNEY ROOF 101 with a 160 mm diameter designed for installation where a circular flue or vent passes through a roof. Constructed for roof penetration sealing and support of chimney pipes with compatible 160 mm pipe diameter. Suitable for residential and light commercial ventilation or flue duct installations that require a dedicated roof entry point.