Oval Stack Head - 10" X 6" - 7" - Compatible with Duct 7" w30h30 as the fitting has an

as the fitting has an opening of 1/2"

+ Product Details Size – 18"w X 24"h pleated MERV 8 filter for HVAC return filter grille - 3 Pack

+ Product Details Size – 8"w X 24"h is the size for the duct opening measurement only

Actual Filter Size – 23 3/4"w x 17 3/4" x 1"

Actual Filter Size – 21 3/4"w x 5 3/4" x 1"

Oval Stack Head - 10" X 6" - 7" - Compatible with Duct 7" w30h30 as the fitting has an+ Product Details Size & Compatibility The size of galvanized sheet metal oval stack head with collar is 10" X 6" 7" and it is compatible with Duct 7" 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