Store Locator
Grouped product items
Product Price Qty
Rockler 3-1/2" Hidden Control Arm
Rockler 3-1/2" Hidden Control Arm Item #44880
In stock
$14.99 Each
Rockler 2-1/2" Hidden Control Arm
Rockler 2-1/2" Hidden Control Arm Item #49991
In stock
$19.99 Each

Get Expert Advice

Return Policy

Hidden Control Arms for Shutter System

These thin metal strips mount to the ends of the louvers, tucked neatly out of sight for maximum visibility when the louvers are opened.

Item #
84% of 100

Get the clearest possible view from your louvered shutters by building them with hidden control arms instead of the traditional center-mounted control arms. These thin metal strips mount to the ends of the louvers, tucked neatly out of sight for maximum visibility when the louvers are opened. Made of stainless steel so it's unaffected by window condensation and moisture. Works in tandem with our Hidden Control Arm Jig and Rockler Shutter System Templates Create louvered, moveable shutters with a clear, unobstructed view out of your windows. To install, drill 1.2mm pilot holes in the ends of the louvers, then drive Stainless Steel Nails (#45400, sold separately).

(1) Hidden control arm for shutter system
More Information
Weight 0.1600
Tech Spec
  • 18 gauge stainless steel for long life and rust prevention
  • Length: 54-5/16'' (cut to length)
  • 2-1/2" Hidden Control Arm will control 28 louvers. 3-1/2" Hidden Control Arm will control 19 louvers
4.2 / 5.0
21 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Work great, easy to install
I made 11 windows of shutters using these control arms, just ordered 22 more for my next batch. I used the rocker jig for the 3 1/2" shutter pin and control arm pin alignment, all were great and effortless.
User submitted image
User submitted image
September 14, 2019
over 3 years ago
Woodworking Experience:
I think the shutter cut list is great and has worked out great for me/would like to see spring loaded plns on the items for the future
I think the system is a very complete and not very hard to do
June 17, 2019
1 year ago
Woodworking Experience:
Great Customer Service
So I ordered this product for shutters I was building and the first time I received them they were damaged. The box didn’t appear to have any damage to it so I sent an email. Within 30 minutes I had a response and they ordered a reship of the order. I’m very impressed with the fantastic customer service I received. Before my new control arms arrived I spoke with a gentlman in customer service who also assured me that if they come damaged again to call back and speak with them about it. My new control arms came in much better condition than the first time and I was able to complete my project. I will definitely be coming back to order more of this item as well as many others.
February 6, 2019
Woodworking Experience:
Plans and cut list excellent
January 30, 2019
1 year ago
Woodworking Experience:
Excellent product would recommend this to anyone the jigs work very well and we’re top quality materials were also a top-quality I’ve built many windows like this for several people the hard way these were made and about a third of the time it would’ve taken me to build seven windows
August 24, 2018
1 year ago
Woodworking Experience:
Love these!!!!!
These are easy to install and easy to adjust. Can’t even tell we put them in. A little spendy but well worth it!
May 23, 2018
over 2 years ago
Easy to install and works great.
March 13, 2018
over 2 years ago
Hidden control arm
These bars do a wonderful job for what they were meant. I have no negative comment concerning this product.
October 23, 2017
over 2 years ago
Woodworking Experience:
Really like this product. Very easy to use and get great results
User submitted image
User submitted image
August 20, 2017
over 2 years ago
Woodworking Experience:
Hidden Control arms for plantation shutters.
They work as advertised.
June 26, 2017
over 3 years ago
Woodworking Experience:
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 9 questions Browse 9 questions and 23 answers
Why did you choose this?
Rockler Store
I like a cleaner look to shutters.
mike h on Jun 28, 2018
used before
Bernard T on May 18, 2018
I like a cleaner look to shutters.
mike h on Jun 28, 2018
Building shutters for house
mark n on Jun 21, 2018
used before
Bernard T on May 18, 2018
pat v on Apr 17, 2018
used before and works excellent
Bernard T on Mar 22, 2018
cleaner and modern look
Carlos on Mar 9, 2018
no other sites offer hidden control arms
jeff e on Feb 28, 2018
They were not in stock at my local store
Bernard B on Jan 23, 2018
we like these
joe R on Jan 3, 2018
I am building movable plantation shutters using your 3 1/2" shutter system and need the hidden control arm.
SEAN C K on Dec 4, 2017
like the clean look
WILLIAM H on Sep 30, 2017
simpler solution
joe R on Jul 24, 2017
building plantation shutters
Daniel S on May 3, 2017
Made my first set of shutters using the hidden control arm. Came out beautiful. Now making 4 more sets for adjoining rooms. I think I will wind up doing all 18 windows in the house over time. This setup is great and allows maximum light without anything blocking your view.
pete h on Apr 12, 2017
to control the slats (Obviously)
marc d on Feb 10, 2017
The Shutters work very well.
Tim S on Jan 27, 2017
Needed them to complete plantation shutter project.
Michael G on Jan 11, 2017
Cleaner look
GARY J T on Dec 29, 2016
JD E on Dec 17, 2016
Because it looks neat and clean.
Roberto D on Oct 27, 2016
design choice
Value hvlp sprayer on Sep 2, 2016
Makes the shutters look so much cleaner without the external control rod. A little pricey, but worth it.
Dan H on Jul 1, 2016
Clean look.
Don B on Jun 16, 2016
works better then the standard control arm and the little pin clips that always pull out of the louver.
WILLIAM W on Jun 5, 2016
match others in house
frank s on Jun 4, 2016
Had to buy more because the sizes available for my project were not long enough. 21 lovers, 19 holes in control arm. Lots of waste.
George M on Apr 17, 2016
I needed for plantation shutters
Manuel M on Dec 4, 2015
for shutters
Jason W on Oct 18, 2015
Rockler is going down hill fast their product quality is getting to be very poor. Service is poor and good luck getting delivery. Throw the bones and see what happens.
Kevin H on Oct 11, 2015
Works great and I like the look of the shutters with the hidden control arm instead of the traditional arm on the front.
James M on Aug 29, 2015
Rockler was the only company I could find that supplied this metal control arm.
Thomas R H on Jul 30, 2015
To assist with the manufacture of my shutters
Paul R on Jun 5, 2015
Building shutters for house
mark n on Jun 21, 2018
pat v on Apr 17, 2018
I am using 2 1/2" shutters and spacing them at 2 1/4" on centers (in order to achieve a 1/4" overlap). Will the control arm for the 2 1/2" w shutters work for this setup? What is the on-center spacing for the holes in the control arm? One of the previous participants stated that the shutter spacing should be 2 1/2" which to me doesn't make since as it would not allow any overlap..or am I mixed up on my thinking?
Bud W on Jan 22, 2018
BEST ANSWER: I did not use the 2 1/2 inch shutter, but I will explain what I used. My shutters were the 3 1/2 inch louvers, with the hidden control arm for 3 1/2 inch louvers. The actual spacing of the louvers in the stiles was 3 inches, which matched the control arm centering, allowing the louvers to open on center. The overlap on mine was from the 3 inch on center, with 3 1/2 inch wide louvers.
For the 2 1/2 inch louvers, the spacing on the stile should be 2 inches, and the hidden control arm for 2 1/2 inch louvers will match it. This will automatically give you the louvers overlap. Hope this helps, Mike
If I use the hidden control arm for 2.5 inch louvres does that mean the louvres have to be 2.5 inches apart? Which is the determining distance - or are they both critical?
Tim G on Mar 5, 2016
BEST ANSWER: To answer the first question the louvers are 2.0 inches a part. There is an over lap of 0.25 of an inches on top and bottom. The control arm holes are also 2.0 inches apart , with the hole being elongated to 0.125 of an inch to accommodate for measurement error.
For the second question, if you use the 2.5 inch louver template set, the gig sets the distance between louvers the 2.0 inches needed for the control arm. I believe the louver distance is the critical component of the system. The hole for the control arm is set back 0.25 of an inch from the edge of the louver.
How much extra clearance will be required between the shutters and the window if I use the hidden control arm? Without the arm the minimum clearance is 11/16".
Ron F on Apr 22, 2016
BEST ANSWER: The clearance of 1/16" is still the same. The hidden control arm attaches to the end of the louver and that is where you will need to cut a rabbet 3/32" wide (just the width of a thin kerf blade) by 7/16" deep. That will provide the clearance you need. If you are using a mid-rail, then you will also need to cut a rabbet 1/4"X1/4" in that to give the hidden control arm room to nest when fully closed.
Happy Woodworking!
I want to make 72” tall shutters. Can the hidden control arms be stacked or linked together?
M J on Sep 5, 2018
BEST ANSWER: I don't think they would work evenly from top to bottom. But you really should install one rail in the middle for stability. The two sections will be within the span of a single control arm. I made 4 sets of these for our home that are just over 72" and they look and work fine. BTW, glue the three rails to one side with the other side doweled but not glued. Next day, install slats and glue that side. Good luck!
how do you install the hidden control arms? I am planning to attach the arms on the outer side (not hinge side) of the shutter and the slats angled upward as you face the front of the shutter. Is this correct or do I have something reversed? Please advise.
Peter S on May 4, 2018
BEST ANSWER: Peter! Don’t know if I fully understand your question, but the hidden control metal strip must always be mounted on the back side of shutter. Doesn’t really matter whether the strip is mounted on the left or right side of each louvre. My preference is to mount it on the hinge side of the shutter. This keeps that mechanism well out of the way when you open up the full shutter from the window. The control metal strips are available from Rockler. Hope this helps??
My pins keep on coming off the control arm can I use this system on preexisting shutters?
Donna E on Feb 13, 2017
BEST ANSWER: If you can remove the shutters to access the louvers I would think it is possible. The spacing of the arm holes would also need to match what you have now. I believe the holes are spaced 3"
How many louvers do i need to cover a a space of 6ft 61inches using the 3-1/2 width?
Turbojetta1 on Jan 13, 2020
BEST ANSWER: Assuming you are asking about 6 feet 6 inches, the design wizard calls for 23 3-1/2 inch lovers.
Can the control arm be cut for 22 louvers of 3-1/2 and do you a 4 inch control arm?
Turbojetta1 on Jan 13, 2020
BEST ANSWER: Yes, you can cut the control arms to the length you require. Supplied length is 54-5/16''. They are not available for 4".
what is the distance of the holes on the 3.5 inch hidden arm piece?
Dennis on Jul 17, 2018
BEST ANSWER: It is 3 inches. This allows for a 1/4" overlap at the top and bottom of each louver.
Prop 65 WarningWARNING: Cancer & Reproductive Harm -