2 Pack - 4" Diameter 90 Degree Adjustable Elbow - 30 Gauge Galvanized - Crimped End Connection Return actual front end outer dimensions

actual front end outer dimensions are approximately 20 5/8" width X 26 5/8" height

Save Money – Save money on your bills today by using our strong magnetic vent covers to seal air and prevent any heating or cooling to go to waste in vacant spaces

Actual Filter Size – 17 3/4"w x 33 3/4" x 1"

} + Product Details Size & Compatibility - The size of a boot register end is 12" X 2

+ Product Details Size – 4"w X 8"h or 8"w X 4"h is the size for the duct opening measurement only

2 Pack - 4" Diameter 90 Degree Adjustable Elbow - 30 Gauge Galvanized - Crimped End Connection Return actual front end outer dimensions+ Product Details Size 4" round duct sheet metal elbow 30 gauge galvanized crimped end connection adjustable from 5 90 Premium Quality Made of galvanized metal to prevent corrosion, oxidation & rust from water & moisture that lasts longer requiring less maintenance Save money with this energy efficient material, maximizes airrflow and reduces fire hazards. Applications 30 Gauge thick & made of thick & durable galvanized sheet metal used for HVAC