18" X 18" Plastic Access Panel Removeable/Reversable Door With Frame For Concealed Wall / Ceiling Application - [Outer Dimensions: 20" Width X 20" Height] Black + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 8"w X 16"h is the size for the duct opening measurement only

+ Product Details Size – 20"w X 22"h is the size for the duct opening measurement only

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

Durable Material - 30 Gauge Thick & Made of Thick & Durable Galvanized Sheet Metal - Used For HVAC System Duct Work In Any Building or Home

Incorporated with Integral Butterfly Damper for full Airflow Control

18" X 18" Plastic Access Panel Removeable Reversable Door With Frame For Concealed Wall Ceiling Application [Outer Dimensions: 20" Width X 20" Height] Black + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 8"w X 16"h is the size for the duct opening measurement only + Product Details Size – 20"w X 22"h is the size for the duct opening measurement only