8" X 25' - Round Duct Sheet Metal Pipe [5 pcs 5'] Aluminum - Cube Core + Product Details Size -

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

+ Product Details Size - 40"w X 16"h is the size for the duct opening measurement only

Design - special "V" shaped louvers ensure 100% view block while ensuring easy un-restricted air flow

+ Product Details Size – 4"h X 12"h is the size for the duct opening measurement only

8" X 25' - Round Duct Sheet Metal Pipe [5 pcs 5'] Aluminum - Cube Core + Product Details Size -8" X 25' Round Duct Sheet Metal Pipe 5 PACK of 5' pipes 30 Gauge Galvanized Crimped End Connection 5 IN A PACK 8 Inch Diameter Pipe 25 Foot Length When Connected 30 Gauge Thick & Made of Thick & Durable Galvanized Sheet Metal Used For HVAC System Duct Work In Any Building or Home In Any Building or HomeIn Any Building or HomeIn Any Building or HomeIn Any Building or Home HIGH QUALITY High Quality Galvanized Sheet Metal with Crimped Ends (Snap Lock