6" X 12" or 12" X 6" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 7.75 X 13.75] 20 Feet Long Design – Rigid gauge ABS 12SFLX-R6 w4h4 Monitor the pump for

Design – Rigid gauge ABS plastic

5mm thick vent covers are the most reliable in the industry

actual front end outer dimensions are approximately 13" width X 13" height -

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 26" or 26" x 6" duct opening (measured at the opening)

+ Product Details Size – 10"w X 24"h is the size for the duct opening measurement only

6" X 12" or 12" X 6" Heavy Duty Floor Grille Fixed Blades Air Grille Brown [Outer Dimensions: 7.75 X 13.75] 20 Feet Long Design – Rigid gauge ABS 12SFLX R6 w4h4 Monitor the pump for Design – Rigid gauge ABS plastic 5mm thick vent covers are the most reliable in the industry