Design Guide
1–800–944–2904 | bosch-home.com/us
Ventilation — 800 Series Downdraft Hoods
Downdraft Hoods Flexible Blower Installation | 800 Series | Ventilation | 149
800 Series Downdraft Hoods
Flexible Blower Installation – Front Exhaust with Flexible Blower Used 
as an Inline Option Example
148 | Ventilation | 800 Series | Downdraft Hoods Flexible Blower Installation
Application
•  Side exhaust with flexible blower used as inline option if ducting 
is more convenient with this configuration
•  Requires at least 18" of clearance to fit the blower and transition
• Blower must be accessible for maintenance
• Elbow, ductwork, blower support structure frame not included
DHG602DUC 
600 CFM Flexible Integral 
Blower
600 CFM flexible blower can 
mount to downdraft or be 
used as an inline blower, and 
can be rotated to exhaust 
downward or to sides
Required Blower
Required Accessories
HDDFTRAN8 
8" Round Front Plate for 
Downdraft
8" Front rough-in plate 
enable ducting to be at front 
of downdraft, for use with 
inline and remote blower 
applications
NOTE: HDDFTRAN8 front plate 
required for front exhaust applications 
with inline and remote blowers.
Optional Accessories
HDD0RSP 
30" Gas Cooktop Seal Kit for Downdraft 
30" gas cooktop seal kit required for 
installation with 30" gas cooktops
HDD6RSP 
36" Gas Cooktop Seal Kit for Downdraft 
36" gas cooktop seal kit required for 
installation with 36" gas cooktops
NOTE: Some applications may require deeper cabinets. Side and rear exhaust require at least 18" of clearance to fit the blower and / or ductwork. Refer to installation 
instructions.
HDDSTRAN8 
8" Side / Rear Transition 
for Downdraft
8" Round transition 
enable ducting to be 
at sides or rear of 
downdraft for flexible 
configurations to 
maximize your kitchen 
design
NOTE: HDDSTRAN8 side / 
rear transition required for 
side or rear exhaust 
applications with inline 
and remote blowers.
800 Series Downdraft Hoods
Flexible Blower Installation – Front Exhaust Example
* For only front downward ducting applications, electrical panel must be remotely mounted. Electrical panel can still be remotely mounted in other exhaust configurations if 
desired. Electrical panel interconnect cable length is 5-ft. long.
Application
•  Flexible blower attached can rotate for left, right or downward 
discharge
•  Front downward application with flexible blower
• Requires space under floor line for ductwork*
•  Can be used with optional Recirculation Kit, sold separately
• Elbow, ductwork, blower support structure frame not included
Required Blower
Optional Accessories
HDDREC5UC 
Recirculation Kit for Downdraft
When ducting to the exterior is not 
feasible, downdraft recirculation 
kit allows filtered air to reenter 
the kitchen while cooking
HDDFILTUC 
Charcoal Filter Replacement for Recirculation 
Kit for Downdraft 
Maintain performance of Bosch downdraft 
recirculation kit with timely replacement 
of charcoal filter to capture and filter odors
HDD0RSP 
30" Gas Cooktop Seal Kit for Downdraft 
30" gas cooktop seal kit required for 
installation with 30" gas cooktops
HDD6RSP 
36" Gas Cooktop Seal Kit for Downdraft 
36" gas cooktop seal kit required for 
installation with 36" gas cooktops
DHG602DUC 
600 CFM Flexible Integral 
Blower
600 CFM flexible blower can 
mount to downdraft or be 
used as an inline blower, and 
can be rotated to exhaust 
downward or to sides










