HILO Oval Stack Head - 12" X 6" - 6" - Compatible with Duct 6" 16in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 10 5/8" width X 20 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 14" or 14" x 8" duct opening (measured at the opening)

+ Product Details Size & Compatibilty - The 8" to 4" round metal pipe reducer & increaser 30 gauge is compatible with duct 8" to 4"

but still light and handy

10"w X 6"h Is The Size For The Duct Opening Measurement Only

HILO Oval Stack Head - 12" X 6" - 6" - Compatible with Duct 6" 16in diameter actual front end outer dimensions+ Product Details Size & Compatibility The size of galvanized sheet metal oval stack head with collar is 12" X 6" 6" and it is compatible with Duct 6" Superior Quality Made in the USA. Our product is made of high quality galvanized sheet metal with crimped ends (snap lock design) for easy fitting and secure connection Applications The oval stack head with ears and throat are used to right angle transition from oval pipe to sidewall grille or register