16" X 16" Steel Access Panel Removable Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 18" Width X 18" Height] Aluminum Bar + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 12" OR 12" x 20" duct opening (measured at the opening)

actual front end outer dimensions are approximately 27 5/8" width X 18 5/8" height

Can be hooked up with our "Butterfly Dampers" for precise airflow control

+ Product Details Size – 26"w X 14"h is the size for the duct opening measurement only

16" X 16" Steel Access Panel Removable Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 18" Width X 18" Height] Aluminum Bar + Product Details Perfect Fit+ Product Details 16"w X 16"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