8" X 8" Sound Rated Steel Access Panel Felt Covered Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 9" Width X 9" Height] To enable screen reader support + Product Details Outer dimensions:

+ Product Details Outer dimensions: 11

while the ingenious dial-controlled damper empowers you to effortlessly regulate airflow

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actual front end outer dimensions are approximately 24 5/8" width X 38 5/8" height

+ Product Details Size - 20"w X 14"h is the size for the duct opening measurement only

8" X 8" Sound Rated Steel Access Panel Felt Covered Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 9" Width X 9" Height] To enable screen reader support + Product Details Outer dimensions:+ 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. Design 1mm galvanized steel material with sleek, shiny, durable white powder coat finish for an attractive look & high durability corrosion protection 15mm medium density fibreboard with felt cover and rubber sealing between the door and frame for tight security.