8" 90 Degree Flat Oval Elbow Top Ceiling Box 75"H – fits a 12"

75"H – fits a 12" X 10" duct opening

LIGHTWEIGHT AND DURABLE CONSTRUCTION: Made of injection molded polypropylene that is light and easy to maneuver but rugged for long-lasting use even in extreme weather

+ Product Details Size - 12"w X 16"h is the size for the duct opening measurement only

It is compatible with 4" duct

With these options

8" 90 Degree Flat Oval Elbow Top Ceiling Box 75"H – fits a 12"+ Product Details Size & Compatibility 8" 90 Degree Flat Oval Elbow is compatible with duct 8" Superior Quality Made in the USA. Our galvanized duct end boot is made of high quality galvanized sheet metal with crimped ends (snap lock design) for easy fitting and secure connection Applications The vertical transition duct 90 degree elbows are used for changing the vertical direction of the rectangular duct. They are fitting to use when needing to make