20" X 20" Steel Flush Access Panel Door for Wall/Ceiling Application with Slotted Lock, Mud-in Flange - [Outer Dimensions: 21" Width X 21" Height] Material_Anodized Aluminum Actual Filter Size – 11

Actual Filter Size – 11 3/4"w x 7 3/4" x 1"

+ Product Details Size – 8" x 14" or 14" x 8" is the size for the duct opening measurement only

Its generous size and universal design ensure a perfect fit for a wide range of thermostat models

actual front end outer dimensions are approximately 26 5/8" width X 14 5/8" height

no sharp edges & easy to clean

20" X 20" Steel Flush Access Panel Door for Wall/Ceiling Application with Slotted Lock, Mud-in Flange - [Outer Dimensions: 21" Width X 21" Height] Material_Anodized Aluminum Actual Filter Size – 11+ Product Details Size 20" X 20" is the size for the drywall opening measurement only, actual front end outer dimensions are 21" Width X 21" 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