Master Flow Fresh Air Vents come with a built-in screen to prevent bird entry. They can be used to vent a combustion system or anywhere fresh air intake is needed. Constructed of galvanized steel.
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- Sturdy galvanized steel construction
- Always seal seams with building code approved sealant or duct tape
- Install with sheet metal screws
- Built-in screen to prevent bird entry
- Maximum temperature rating of 390 degree F, minimum temperature rating of -100 degree F















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