• Designed for round flue size:  4"
• Cross-sectional area (sq. in.)= 12.6
• Stainless steel 304-alloy
• 24-guage, economical way to prevent downdrafts
• Round version for use with liners and solid-pack factory-built chimneys
• Rectangle base version for masonry chimneys
• Lifetime Warranty 

 HomeSaver® WindBeater™ Speciality cap designed for use with round flue pipe

(WHEN USING WINDBEATER ON A FIREPLACE FLUE-READ CAREFULLY)
The WindBeater size you use must have a cross-sectional area approiate for the fireplace!