12" X 12" Steel Access Panel Removable Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 13" Width X 13" Height] 18in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 18 5/8" width X 34 5/8" height

minimizing waste

featuring a 6" round duct opening

Actual Filter Size – 29 3/4"w x 25 3/4" x 1"

The total outer size of this grille is the listed size plus plus 2 and 5/8"

12" X 12" Steel Access Panel Removable Door For Wall / Ceiling Application (Lock and Key) With Frame - [Outer Dimensions: 13" Width X 13" Height] 18in diameter actual front end outer dimensions+ Product Details Size 12"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13" width X 13" 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,