Model # RB14X6X8

Internet # 100135879

Store SKU # 351407

Store SO SKU # 755578

14 in. x 6 in. to 8 in. Universal Register Box

$9.31 /each

Frequently Bought Together

Product Overview

The Master Flow 14 in. x 6 in. x 8 in. Universal Register Box creates a straight (in-line) transition from round pipe or insulated flexible duct to an air register or grille. It can be installed with sheet metal screws. It is suitable for most HVAC applications. This universal register box is made of galvanized steel.

  • Galvanized steel
  • Creates a straight (in-line) transition from 8 in. round pipe or insulated flexible duct to a 14 in. x 6 in. air register or grille
  • Install with sheet metal screws (not included)
  • Always seal seams with building code-approved sealant or duct tape (not included)
  • Always insulate ductwork for greater system efficiency and comfort (insulation not included)

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
14 in 


Brand/Model Compatibility 
HVAC application 
All HVAC types 
Product Weight (lb.) 
1.6 lb 

Warranty / Certifications

Manufacturer Warranty 
Free from Manufacturer Defect at Time of Delivery. 

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Customer Questions & Answers

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Customer Reviews

Rated 4.5 out of 5 by 2 reviewers.
Rated 5.0 out of 5.0 by Does the trick I needed to add another vent to a back room that was always cold in winter and hot in summer. The room is now nice a toasty. This is a basic register box that fit my needs. I does what it is supposed to do. February 26, 2015
Rated 4.0 out of 5.0 by fit ok price was ok. fit was good not great. for a duct don't think your going to get much better. April 15, 2014
  • 2016-07-27 T13:27:01.296-05:00
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