Hoyme BDH – Back Draft Hood Damper


HMI BDH Series – Back Draft Hood Damper


The Hoyme BDH Back Draft Hood Damper is designed specifically as an outlet only Damper.

(The Inlet model is the 00H -All Weather Hood )


There are two types available from Hoyme Manufacturing.

Spring Closed – Regular MetalGravity Closed – Painted White

Features Include:

  • An End Switch may also be added to the spring closed model
  • Both types are available in either regular or white painted metal
  • BDH – Back Draft Hood commonly comes in sizes of 4″ – 12″ in diameter
  • Contact the factory if other sizing is required

Model Number Identification:

BDH – **00-x00 (-G)

Where ** is the size of the Damper and x indicates an end switch (with an S or a 0).

For Example:

8″ Back Draft Hood
– Spring Closed
8″ Back Draft Hood
– Spring Closed
– with an End switch
8″ Back Draft Hood
– Gravity Closed
8″ Back Draft Hood
– Gravity Closed
– with an End switch
BDH – 0800 – 000BDH – 0800 – S00BDH – 0800 – 000 – GBDH – 0800 – S00 – G