24" X 24" Sound Rated Steel Access Panel Felt Covered Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 25" Width X 25" Height] Color_R-4.2 Yellow + Product Details Size -

+ Product Details Size - 20"w X 32"h is the size for the duct opening measurement only

this guard ensures long-lasting protection and security

With precise measurements for seamless integration

Actual Filter Size – 15 3/4"w x 24 3/4" x 1"

24" X 24" Sound Rated Steel Access Panel Felt Covered Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 25" Width X 25" Height] Color_R-4.2 Yellow + Product Details Size -+ Product Details Size 24" X 24" is the size for the drywall opening measurement only, actual front end outer dimensions are 25" Width X 25" 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.