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] 18" Round Duct Pipe + Product Description This aluminum

+ Product Description This aluminum flex duct is intended to be used in heating

+ Product Details Size – 14" x 34" or 34" x 14" is the size for the duct opening measurement only

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+ Product Details Size - 36"w X 34"h is the size for the duct opening measurement only

+ Product Details Size – 36"w X 8"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] 18" Round Duct Pipe + Product Description This aluminum+ 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.