4-in HVAC Duct Manual Volume Damper with Sleeve - Galvanized Sheet Metal Round Volume Damper Airflow Ducting Branch, Adjustment Handle HVAC Air Balancing System - Easy to Install
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Best Review
KerryOK52025-04-15
Customers like the functionality and ease of installation of the product. They mention it works well for heat ducts and operates smoothly. However, some customers have reported issues with the fit and air flow. They say the disc is almost 1/2" too small, and it doesn't reduce airflow enough. Customers also dislike the seal and bendability. Opinions are mixed on the build quality and value for money.
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