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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.
  • Built-in bird screen
  • 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

Refund Policy:

Enjoy peace of mind with Big Blue Products' 30-day refund policy. Contact us within 30 days of purchase for returns or exchanges under the following conditions:

  • In case of receiving the wrong item or a defective product (excluding man-made damage), please provide a photo as proof. Upon confirmation, we will either accept the return or provide a replacement.
  • If the item is in good condition and matches the description, the buyer is responsible for return shipping costs.

Contact Us:

We can be contacted at any time through eBay messages if you have any questions, comments, or product requests. We will respond to you within 24 hours and do our best to help you out! We encourage our customers to contact us with any questions or concerns! We'd like to be sure you are completely satisfied with your purchase.

Big Blue Products, inc 130 Eileen Way Syosset, NY 11791 United States