12X20 ND-RSD NO | Rectangular Damper | 12X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls Subcategory_Van Stone Style Flange Replacement Split Rings & Flange Insulating Joints & Flange Bolt Kits which contains five 271-51 Angle

which contains five 271-51 Angle Mounting Brackets with screws

3/4 X 1/2 316 S

3/8 X 3/8 (NAB X FIP ELBOW)

3/8 150 316 COUPLING

12X20 ND-RSD NO | Rectangular Damper | 12X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls Subcategory_Van Stone Style Flange Replacement Split Rings & Flange Insulating Joints & Flange Bolt Kits which contains five 271-51 AngleACTUATORS ARE INSTALLED ON THE 2ND DIMENSION, PHOTO IS GENERIC AND MAY NOT REPRESENT THE PART BEING ORDERED Rectangular Damper 12X20 ND MOTORIZED DAMPER SPRING RETURN NORMALLY OPEN Resources Datasheet ^^This damper is 12" by 20". The motor lever is installed on the 20" side. Full dimensional specifications are in the datasheet below.