The Terminal Guard 18" x 18" x 8" (40085276) is a heavy-duty protective enclosure designed to safeguard large chimney terminals, flues, and roof-mounted extraction or ventilation outlets from bird nesting, animal intrusion, and wind-blown debris. Manufactured from high-grade, corrosion-resistant galvanized or stainless steel wire mesh, this robust guard is engineered to withstand severe weather conditions, corrosive atmospheric elements, and prolonged outdoor exposure without structural failure.
 
Featuring a spacious 18-inch by 18-inch footprint with an 8-inch depth, the unit provides generous clearance over larger or multi-flue chimney pots while maintaining an optimal open-area ratio. This ensures that exhaust gases, smoke, or ventilation airflow can discharge freely without restriction, preventing dangerous backpressures or the accumulation of harmful combustion byproducts.
 
Designed for secure and permanent fixing to masonry stacks or roof structures, the guard features sturdy mounting flanges or fixing points that withstand high wind loads and tampering attempts. Whether you are protecting a commercial ventilation discharge point, a residential multi-flue chimney system, or a specialized heating flue, this terminal guard delivers professional-grade security, regulatory compliance, and enduring peace of mind.
 
This Square Terminal Guard 18" x 18" x 8" meets statutary regulations for flues that are less than 2m above ground level.
 
It can also be used to protect things like lights, clocks or alarms in vulnerable positions.