8" X 8" Universal Aluminum Access Panel Door For Wall / Ceiling Application (Push-Lock) With Solid Frame - [Outer Dimensions: 9" Width X 9" Height] with filter Measure the size of the

Measure the size of the air drywall opening

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With a 8" diameter for the duct opening measurement

If your hole is 14" wide by 20" tall

8" X 8" Universal Aluminum Access Panel Door For Wall / Ceiling Application (Push-Lock) With Solid Frame - [Outer Dimensions: 9" Width X 9" Height] with filter Measure the size of the+ 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 aluminum solid frame construction. Design Aluminum frame with no welded edges. Fully removable door with a spring loaded hinge. Open close easily with push lock technology, just push open and push close. Easy Access Provides easy access for HVAC, plumbing, electrical, crawlspace etc.