10 Pack 4" Round x 24" Long (Total 20 Feet) - 30-Gauge Round Duct Sheet Metal Pipe - Snap Lock Vent Pipe [10 Pieces, 2' Each] Color_White The 1/2" black insulation

The 1/2" black insulation

+ Product Details Perfect Fit & Easy Sizing - Designed for a 22" x 16" OR 16" x 22" duct opening (measured at the opening)

The total outer size of this grille is the listed size plus 2 and 5/85"

+ Product Details Size – 12"w X 22"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 14 5/8" height -

10 Pack 4" Round x 24" Long (Total 20 Feet) - 30-Gauge Round Duct Sheet Metal Pipe - Snap Lock Vent Pipe [10 Pieces, 2' Each] Color_White The 1/2" black insulation+ Product Details Size & Compatibility The size of sheet metal pipe is 4" round x 24"long, compatible with duct 4" 10 in a pack 4 inch diameter pipe 20 foot length when connected 30 gauge thick & made of thick & durable galvanized sheet metal Premium Quality Made in the USA. our solid dryer vent pipe is made of high quality galvanized sheet metal with crimped ends (snap lock design) for easy fitting and secure connection to consecutive duct joints