Ventilator Dampers

48-1/2 x 48-1/2" Square Wall Dampers 49" Rough Opening Width x 49" Rough Opening Height, For Use with 1SDE48, 1MDE48, 1HDE48

20-1/2 x 20-1/2" Square Wall Dampers 21" Rough Opening Width x 21" Rough Opening Height, For Use with 2VLD20, 2VHD20, 2DRV20, 2STV20, 2CAV20

36 x 36" Square Motorized Dampers 37" Rough Opening Width x 37" Rough Opening Height, For Use with 1SDR36, 1SDE36, 1SDS36, 1MDE36, 1HDE36

24 x 24" Square Motorized Dampers 25" Rough Opening Width x 25" Rough Opening Height, For Use with 1SDE24, 1SDS24, 1MDE24, 1HDE24

24-1/2 x 24-1/2" Square Wall Dampers 25" Rough Opening Width x 25" Rough Opening Height, For Use with 1SDE24, 1MDE24, 1HDE24, 2VLD24, 2VHD24, 2DRV24, 2STV24, 2CAV24

18-1/2 x 18-1/2" Square Wall Dampers 19" Rough Opening Width x 19" Rough Opening Height, For Use with 2VLD18, 2VHD18, 2DRV18, 2STV18, 2CAV18

12-1/2 x 12-1/2" Square Wall Dampers 13" Rough Opening Width x 13" Rough Opening Height, For Use with 2VLD12, 2VHD12, 2DRV12, 2STV12, 2CAV12

30 x 30" Square Motorized Dampers 31" Rough Opening Width x 31" Rough Opening Height, For Use with 1SDE30, 1SDS30, 1MDE30, 1HDE30

36-1/2 x 36-1/2" Square Wall Dampers 37" Rough Opening Width x 37" Rough Opening Height, For Use with 1SDE36, 1MDE36, 1HDE36

42-1/2 x 42-1/2" Square Wall Dampers 43" Rough Opening Width x 43" Rough Opening Height, For Use with 1SDE42, 1MDE42, 1HDE42

30-1/2 x 30-1/2" Square Wall Dampers 31" Rough Opening Width x 31" Rough Opening Height, For Use with 1SDE30, 1MDE30, 1HDE30, 2STV30

16-1/2 x 16-1/2" Square Wall Dampers 17" Rough Opening Width x 17" Rough Opening Height, For Use with 2VLD16, 2VHD16, 2DRV16, 2STV16, 2CAV16

42 x 42" Square Motorized Dampers 43" Rough Opening Width x 43" Rough Opening Height, For Use with 1SDE42, 1SDS42, 1MDE42, 1HDE42

48 x 48" Square Motorized Dampers 49" Rough Opening Width x 49" Rough Opening Height, For Use with 1SDE48, 1SDS48, 1MDE48, 1HDE48