10" X 10" Sound Rated Steel Access Panel Felt Covered Door For Concealed Wall / Ceiling Flush Application With Slotted Lock - [Outer Dimensions: 11" Width X 11" Height] Compatible with Duct 8" Design – Designed to withstand

Design – Designed to withstand bends and sharp turns without kinking

with actual outer dimensions of 32

What does this mean

10"w X 4"h Is The Size For The Duct Opening Measurement Only

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10" X 10" Sound Rated Steel Access Panel Felt Covered Door For Concealed Wall / Ceiling Flush Application With Slotted Lock - [Outer Dimensions: 11" Width X 11" Height] Compatible with Duct 8" Design – Designed to withstand+ Product Details Size 10" X 10" is the size for the drywall opening measurement only, actual front end outer dimensions are 11" Width X 11" 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.