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" Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 15 3/4" x 1"

with actual outer dimensions of 32

+ Product Details Size - 26"w X 24"h X 2"d (for duct opening measurement only)

What does this mean

Design – Designed to withstand bends and sharp turns without kinking

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" Actual Filter Size – 29+ 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.