6" X 6" Sound Rated Steel Access Panel Felt Covered Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 7" Width X 7" Height] Compatible with Duct 10" + Product Details Size -

+ Product Details Size - 12"w X 26"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 20" or 20" x 8" duct opening (measured at the opening)

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 12" duct openings

actual front end outer dimensions are approximately 38 5/8" width X 22 5/8" height -

Constructed from high-impact

6" X 6" Sound Rated Steel Access Panel Felt Covered Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 7" Width X 7" Height] Compatible with Duct 10" + Product Details Size -+ Product Details Size 6" X 6" is the size for the drywall opening measurement only, actual front end outer dimensions are 7" Width X 7" 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.