24" X 24" Steel Access Panel Removable Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 25" Width X 25" Height] 12" Diameter + Product Details Size -

+ Product Details Size - 18"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 34"h X 2"d (for duct opening measurement only)

+ Product Details Size – 20"w X 24"h is the size for the duct opening measurement only

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For 14" Round Duct Opening - Spiral or Flex

24" X 24" Steel Access Panel Removable Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 25" Width X 25" Height] 12" Diameter + Product Details Size -+ Product Details Size 24"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25" width X 25" height Installation Easy installation just screw the sides of the access panel frame into your duct hole see photos for example. Our HVAC Access Door can be used in both commercial and residential settings. Design Easy access removable door provides easy access removable door for HVAC, plumbing,