S3GA12CB-S&P gravity supply air damper. Counterbalanced.

S3GA16CB-S&P gravity supply air damper. Counterbalanced.92612221-S&P 12 inch high roof mounting curb. 26-1/2 inch sq. Galvanized with wood nailer.

S3GA12CB-S&P gravity supply air damper. Counterbalanced.

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S&P gravity supply air damper. Counterbalanced.

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