Photo 1 of 8" x 4" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is Duct Opening Inside Measurement)

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Photo 1 of 8" x 4" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is Duct Opening Inside Measurement)Photo 2 of 8" x 4" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is Duct Opening Inside Measurement)