12x8 Duct Opening 1 Way Steel Air Supply Diffuser Register Vent Cover Grill for Sidewall and Ceiling Distance between the centers of

Distance between the centers of two screws is 13"

75”wide and 10”high

Actual outside measurement is 14" x 8"

actual overall outside dimension is 18

This product has listed size 8“w X 8”h is for duct opening measurement only

12x8 Duct Opening 1 Way Steel Air Supply Diffuser Register Vent Cover Grill for Sidewall and Ceiling Distance between the centers ofThe Listed size 12"x 8" is for inside duct opening measurement, outside dimension is 13. 75" X 9. 75" Stamped Face Steel Construction with 1 2" fin spacing for high air flow One Way Air Flow deflection Multi shutter damper with easy handle to adjust desired amount of air flow Individually packed