8" X 8" Steel Flush Access Panel Door for Wall/Ceiling Application with Slotted Lock, Mud-in Flange - [Outer Dimensions: 9" Width X 9" Height] w16h16 Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 33 3/4" x 1"

+ Product Details Size - 20"w X 22"h is the size for the duct opening measurement only

+ Product Details Size - 34"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 26"h X 2"d (for duct opening measurement only)

8" X 8" Steel Flush Access Panel Door for Wall/Ceiling Application with Slotted Lock, Mud-in Flange - [Outer Dimensions: 9" Width X 9" Height] w16h16 Actual Filter Size – 23+ Product Details Size 8" X 8" is the size for the drywall opening measurement only, actual front end outer dimensions are 9" Width X 9" Height High Quality High grade steel construction. Flush Access Door Is a type of door or panel designed to provide access to concealed spaces, such as HVAC systems, electrical components, plumbing pipes, or other utility areas. Unlike traditional doors that have visible frames and hinges, a flush access door is