12" X 12" Plastic Access Panel Removable/Reversible Door With Frame For Concealed Wall / Ceiling Application - [Outer Dimensions: 14" Width X 14" Height] Round Damper Ring + Product Details Size –

+ Product Details Size – 12"w X 18"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 36" or 36" x 6" duct opening (measured at the opening)

+ Product Details Size - 16"w X 28"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 34 5/8" width X 10 5/8" height

12" X 12" Plastic Access Panel Removable/Reversible Door With Frame For Concealed Wall / Ceiling Application - [Outer Dimensions: 14" Width X 14" Height] Round Damper Ring + Product Details Size –+ Product Details 12"w X 12"h is the size for the drywall opening measurement only, actual front end outer dimensions are approximately 2" wider. Most common access door Plastic Frame Easy Installation Just apply caulking or glue to the back of the frame Put in frame and lock the door into place Includes slots for a screwdriver or other prying devices Hinges on the top and bottom The door can be easily removed with a slight squeeze Installation