The Colt Cowls High Top Birdguard is the nation's top choice for safeguarding your chimney from birds, animals, and debris. Specifically designed for use with gas-fired appliances, this birdguard not only prevents unwanted entry but also minimizes the risk of clogging due to soot or other obstructions. Key Features: Gas Fire Approved: Designed for chimneys serving gas appliances. Universal Fit: Accommodates all flue sizes ranging from 170mm to 250mm, ensuring a perfect fit for most chimneys. Corrosion-Resistant Mesh: Constructed with durable stainless steel mesh, identical to that used in Colt Top and Colt Top 2, providing long-lasting protection against the elements. Sec