Design Guide
1–800–944–2904 | bosch-home.com/us
Ventilation — 800 Series Downdraft Hoods
Downdraft Hoods Inline or Remote Blower Installation | 800 Series | Ventilation | 147146 | Ventilation | 800 Series | Downdraft Hoods Inline or Remote Blower Installation
• Flexible transition design allows for left, right or rear venting
• Front rough-in plate may be used with a 6" round duct or elbow
•  Ability to use with DHG6015NUC inline or DHG6023RUC 
remote blowers 
• Some blower positions may need deeper cabinets. See 
installation guide
• Flexible transition design allows for left, right or rear venting
• For DHG602DUC flexible downdraft blower used as inline 
installation
• Some blower positions may need deeper cabinets. See 
installation guide
NOTE: HDDSTRAN6 or HDDSTRAN8 side / rear transition required for 
side or rear exhaust applications with inline and remote blowers.
6" Round transition 
enable ducting to be 
at sides or rear of 
downdraft for flexible 
configurations to 
maximize your 
kitchen design
800 Series Downdraft Hoods
Inline or Remote Blower Installation – Round Front Downdraft Plates
800 Series Downdraft Hoods
Inline or Remote Blower Installation – Side / Rear Downdraft Transitions
Inline or Remote Blower 
Installation – Transition for 
Rectangular Duct for Downdraft
Inline or Remote Blower 
Installation – 2' Rectangular 
Duct for Downdraft
•  Front rough-in plate design allows for front venting
•  Front rough-in plate may be used with a 6" round duct 
or elbow
•   Ability to use with DHG6015NUC inline or DHG6023RUC 
remote blowers
Rectangular duct transition required to connect 2' rectangular 
duct to downdraft
2' Rectangular duct can be used as extension to exhaust 
through a cabinet or wall while maximizing cabinet 
storage space
• Duct can be used as an extension to exhaust through a 
cabinet or wall
• May be attached to sides or rear of downdraft housing
• HDDRECTRN transition needed to connect HDD2RECTD 
to downdraft housing
• For use with remote or inline blowers
• Front rough-in plate design allows for front venting
• Front rough-in plate may be used with a 8" round duct 
or elbow
• For DHG602DUC flexible downdraft blower used as 
inline installation
HDDFTRAN6 
6" Round Front Plate for Downdraft
HDDSTRAN2 
Transition for Rectangular Duct for Downdraft
HDD2RECTD 
2' Rectangular Duct Downdraft
HDDFTRAN8 
8" Round Front Plate for Downdraft
NOTE: HDDFTRAN6 or HDDFTRAN8 front plate required for front exhaust applications with inline and remote blowers.
6" Front rough-in plate 
enable ducting to be at 
front of downdraft, for 
use with inline and remote 
blower applications
8" Front rough-in plate 
enable ducting to be at 
front of downdraft, for 
use with inline and remote 
blower applications
HDDSTRAN6 
6" Side / Rear Transition for Downdraft
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










