12" X 12" Steel Access Panel Removable Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 13" Width X 13" Height] w28h28 Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 15 3/4" x 1"

we recommend purchasing one of our HVAC access doors

+ Product Details Size - 25"w X 20"h is the size for the duct opening measurement only

Actual dimensions: 13

75" Plenum Box Depth 5

12" X 12" Steel Access Panel Removable Door For Concealed Wall / Ceiling Application With Slotted Lock - [Outer Dimensions: 13" Width X 13" Height] w28h28 Actual Filter Size – 33+ 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 Small bendable ears for flexible installation just screw the sides of the access panel frame into your duct hole. Our HVAC Access Door can be used in both commercial and residential settings. Design Easy access removable door provides easy access removable door