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2-1/2" H x 1/2" Shank Rockler Shutter Louver Bit
2-1/2" H x 1/2" Shank Rockler Shutter Louver Bit Item #43507
In stock
$59.99 Each
3-1/2" H x 1/2" Shank Rockler Shutter Louver Bit
3-1/2" H x 1/2" Shank Rockler Shutter Louver Bit Item #43512
In stock
$59.99 Each

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Rockler Shutter Louver Router Bits - 1/2" Shank

This unique router bit is specifically designed to quickly machine the slats for louvered shutters.
Item #
100% of 100

Use our Louver Router Bits to create your own shutter louvers in 2-1/2" or 3-1/2" widths. The louvers interface seamless with other elements of the Rockler Shutter System. The included ball-bearing guide runs along the middle of the shutter slat—just rout one side, then turn the slat around to rout the other side. 1/2" shanks ensure a smooth chatter-free cut.

To learn how you can build your custom shutters with ease, view all of our Rockler Shutter Jig Templates and select the style that is perfect for your application.

(1) Rockler Shutter Louver Router Bit
More Information
Weight 0.2500
Tech Spec


  • Cutter Height: 2-1/2"
  • 43512

  • Cutter Height: 3-1/2"
  • Bit Type Specialty
    Diameter 1"
    Cutter Height 2-1/2"
    Shank Size 1/2"
    5.0 / 5.0
    4 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Neat tool
    i made my own shutter lovers in a breeze
    November 15, 2018
    1 year ago
    Woodworking Experience:
    First time I ever used a router table and used this bit to make 30 10" louvers from 4 foot poplar boards. Shipping was quick. Note my louvers came out a quarter inch shorter in width than the original 2'5" stock but I'm not sure if that is normal or my set up was off, like I said it was my first time using a router table. Be nice if they included a diagram showing how to set the bit for us rookies.
    December 2, 2016
    over 3 years ago
    Woodworking Experience:
    Essential for shutter blades!
    The shutter bit does a very clean, consistent job. Works very well.
    November 14, 2016
    over 3 years ago
    Woodworking Experience:
    These router bits did exactly what I required and even exceeded expectations ... thank you
    May 22, 2015
    over 5 years ago
    Woodworking Experience:
    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 13 questions Browse 13 questions and 29 answers
    Why did you choose this?
    Rockler Store
    Building shutters for house
    mark n on Jun 21, 2018
    Make my own shutters
    SM-2345-8189 Alex C on Oct 18, 2017
    Building shutters for house
    mark n on Jun 21, 2018
    Gilbert F on Nov 6, 2017
    Make my own shutters
    SM-2345-8189 Alex C on Oct 18, 2017
    Building shutters for daughter, and she waned 2.5 inch louvers
    Jeff in AZ on Sep 17, 2017
    To give my son to make shutters for their new home
    Judith J on Dec 3, 2016
    Making shutters for old house.
    Sean B on Oct 7, 2016
    Joe M on Sep 22, 2016
    To make louver slats
    John M on Aug 26, 2016
    Rockler offers quality items which are sometimes difficult to find at other stores. Their merchandise is offered at a reasonable and fair price.
    Mike F on Aug 5, 2016
    I pick this router bit for its purpose of making perfect Louvers.
    Darrol T on Apr 29, 2016
    shutter construction
    Michael M on Apr 17, 2016
    This router bit is the only way I have found to get a consistent bevel on a louver.
    Jay V on Jan 13, 2016
    this is the site i was directed to by others making shutters and is the first time i have purchased from here so we will see.
    Kevan L on Nov 15, 2015
    Makes your own louvers in any length (and timber) you desire. Im in Australia so shipping pre-milled louvers is not cost effective<br /><br />I wish rocker made a bit that did top AND bottom in the one pass, it would mean only two passes on the table rather than 4, but its still a good bit.
    Leith H on Sep 17, 2015
    only one i could find
    gerald k on Jul 16, 2015
    Making shutters
    Jonathan B on Apr 7, 2015
    Gilbert F on Nov 6, 2017
    Building shutters for daughter, and she waned 2.5 inch louvers
    Jeff in AZ on Sep 17, 2017
    What is the recommended speed for this bit?
    David M on Feb 24, 2017
    Is there an inch & a quarter router bit for 11/4 louvers?
    Thomas S on Sep 24, 2015
    BEST ANSWER: Router bit #43503 has a radius of 5/32". This is used for the beading of the shutter as well as cutting the rounded portion on the 1-1/4" shutter slats.
    What size louver will the 2 1/2 inch cutter cut? Or is it a cutter to shape a 2 1/2 inch louver?
    Dominic F on Feb 13, 2016
    BEST ANSWER: I used this bit on louvers that are 3" wide and it worked fine. It seems the wider the louver the flatter the finished profile is in the middle. I don't know if you have used this bit yet, and I am sure you already are careful with your router. I used this on maple on a router table and a couple of the louvers chipped out enough that I had to remake them. Also, given the length of the bit it can pop the wood out if you try to take too much off at once. It is hard to use a featherboard to hold the piece once the rounded profile is cut on the opposite from where you are working.
    Does the louver router bit come in 1/4 inch shaft?
    Marty S on Apr 15, 2015
    BEST ANSWER: We only have this bit with the 1/2" shaft.
    What is the cutter made of?
    Brandon H on Apr 18, 2016
    BEST ANSWER: At the bottom left of the website there is an info box which says the bit is made from K10 and K20 carbide. The box is generic, but it likely applies to this bit as well.
    what is the recommended thickness (center) of the stock for the 2 1/2"-width louvers?
    Mann L on Nov 16, 2015
    BEST ANSWER: All louvers should be 3/8 no matter width. The radius opposite the bearing determines thickness. i ran these on a table router and ran more than 600 louvers or 2400 passes. it will require some finish sanding and i recommend setting up some feather boards to avoid snipe. I ended up putting a spacer on the out-feed fence to keep the part vertical on the last 2 passes. This bit works well.
    Would this bit be okay for 1/4" stock? I'm not making shutters, but would like something to round off and taper the leading and trailing edges of high power rocket fins (1/4" birch plywood). This would be great to "airfoil" rocket fins.
    Jonathan O on Apr 3, 2019
    BEST ANSWER: You could create a simple guide jig that would limit the amount of the bit that contacts the wood. Coupled with a 2 level feather board to maintain the board flat against the guide, it should work perfectly.
    I would like the rockier jigs and accessories, i.e. metal control arms that fit on the end of the louvres and are invisible from the front?
    G D on Apr 2, 2018
    BEST ANSWER: Do you have way to connect this all to to the steel rods together? If you have a way then this setup will work.Enter
    do you sell the wood used for the shutter louver router bit?
    Ashlie E on Jan 19, 2016
    BEST ANSWER: Well not really they don't. Not in basswood at least but u don't have to use basswood. They do sell the shutter louvers already routed in basswood ... this is what I do. If u want to do the routing urself then u will have to buy 3/8" stock (1/4" actual dimension) or 1/2" stock (3/8" actual dimension) depending upon the width of the louvers u are making.
    Is it necessary to make any adjustment to the router position when flipping the louver over to do the opposite side?
    Paul K on Nov 17, 2015
    BEST ANSWER: No. Once you establish the correct height for the bit, you leave it there for the duration. I was really impressed with how well the system worked and how beautiful the shutters turned out. I made mine out of solid cherry and they look great. My wife's favorite wood project ever.
    Does the bit stay sharp?
    Steven S on Jul 21, 2019
    BEST ANSWER: The Shutter Bit offered with Rockler is is a good quality bit and should last you in excess of 30 or so hours of constant use with soft woods and a bit less for some hardwoods. If you are making 1 or 2 households shutters you may want to order a spare bit in case you run into some issues. If you are doing production work, you will need to set up your moulder knife to do more "production" type of volumes. I hope that this helps.
    can this item be used on any router as our products are from London UK?
    Susan M on May 8, 2019
    BEST ANSWER: So long as your router accommodates a shaft that is 1/2" in diameter, yes. I strongly recommend that you have a variable speed control, as different woods require different speeds.
    thinking about using this bit to shape canoe paddles?
    hughie w on Aug 24, 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