12" X 12" Aluminum Access Panel Gypsum Board/Sheet Rock Door For Wall / Ceiling Application (PUSH-LOCK DOOR) With Frame - [Outer Dimensions: 13" Width X 13" Height] 18in diameter With adjusting knobs for precise Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

With adjusting knobs for precise dimensions and an easy-to-switch-out blade (just unscrew

ensuring reliable performance over time

+ Product Details Size - 32"w X 22"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 18" OR 18" x 32" duct opening (measured at the opening)

is the same as a 1/4" Plumbing fitting

12" X 12" Aluminum Access Panel Gypsum Board Sheet Rock Door For Wall Ceiling Application (PUSH LOCK DOOR) With Frame [Outer Dimensions: 13" Width X 13" Height] 18in diameter With adjusting knobs for precise Compatible With Duct 7in Applications This sheet metal DDAG A 1212 With adjusting knobs for precise dimensions and an easy to switch out blade (just unscrew ensuring reliable performance over time