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4'' T-Connector Dust Collection Fittings

Item #
96% of 100

Allows you to design a mainline and branch line dust collection system. Primarily used when space or design limitations will not allow for Y-connectors.

(1) 4" T-Connector Dust Collection Fittings
More Information
Brand Rockler
Weight 0.9500
Tech Spec
  • OD: 4''
Size 4"
Material Plastic
Type "T" Fitting
4.8 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
They work very well
March 22, 2020
3 months ago
Woodworking Experience:
Works great
March 9, 2020
4 months ago
Works great and does the job
January 6, 2020
5 months ago
Woodworking Experience:
Works great no problems.
Works great no problems.
April 13, 2009
I recently purchased a new machine...
I recently purchased a new machine and needed to rearrange my shop which then required that I change the dust collection plumbing. I used several 4 inch 'y' connectors blast gates and clear flex hose in addition to a couple of these 'T's' The 'T's were used on the inlet side of two dust collectors that I put in parallel with each other. When I made my drum sander mobile I no longer needed a dedicated dust collector for it so I mounted both dust collectors on a base and used the 'T's' to join the inlets into one.I used a 'Y' to join the dust collector exhausts before going into a cyclone.
November 19, 2007
So far it appears to be fine but some of the parts I need to finish my installation haven't come yet.
March 12, 2016
over 4 years ago
Woodworking Experience:
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Browse 2 questions Browse 2 questions and 30 answers
Why did you choose this?
Rockler Store
dust collection
Bill F on Jun 1, 2020
Fittings for a dog training tease wall.
Kevin J on Jan 28, 2020
dust collection
Bill F on Jun 1, 2020
I chose this to make my run to my floor sweep.
Shawn W on Mar 10, 2020
Fittings for a dog training tease wall.
Kevin J on Jan 28, 2020
I need it.
G O on Jan 12, 2020
have others and works great
Joseph on Dec 15, 2019
To implement blast gates for the multiple tools I have.
Mark H on Dec 15, 2019
fits need
Jessie E on Jul 12, 2019
same as above
Merland R on Apr 6, 2019
I needed this fittings between my Sawstop in-line router and my saw.
JOSEPH Z on Jan 24, 2019
it was pretty
bill c on Jul 31, 2018
I need these accessories to route my primary collector run along a wall and still access machines in the center area of my shop.
Phil M on Jul 2, 2017
vent system for Swietoslawski ebulliometer fugitive emissions from vapor liquid equilibrium condensers
George W on May 17, 2017
from my separator to my table saw and jointer
Richard C on Mar 3, 2017
To save space when needing the dust collector hose to go to different directions or multiple directions in the work shop.
Veryl K on Feb 15, 2017
Works with new system that I installed
Frederick J on Feb 12, 2017
Laura S. H on Jan 16, 2017
Dust collection system
Michael P on Jan 16, 2017
I will use these to route my collection system to my machines
Phil M on Dec 8, 2016
Used with my band saw
Charles S on Dec 5, 2016
To tee off to my Laguna 14-12 bandsaw from my table saw and such
Bob D on Nov 16, 2016
Need it for my vac system to add chop saw.
Mike on Sep 18, 2016
To use fro a dust collection jig.
Timothy B on Sep 11, 2016
I have a need, so I thought I would try it.
Tom on Jul 23, 2016
I needed to add another tool to the shop vac.
Herman G on Jun 22, 2016
Merland R on Feb 23, 2016
remodeled shop
charles m on Nov 29, 2015
building a vacuum system
Virginia L R on Nov 5, 2015
needed for sitting up system
EDDIE O on Jul 12, 2015
for my dust collecting system
Ernest T on Jun 2, 2015
To expand my existing system.
STEPHEN SHIRLEY on May 29, 2015
I chose this to make my run to my floor sweep.
Shawn W on Mar 10, 2020
I need it.
G O on Jan 12, 2020
Will this 4" T-Fittng fit a Dust Right handle?
Mike Y on Nov 10, 2016
Prop 65 WarningWARNING: Cancer & Reproductive Harm -

Prop 65 WarningWARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to