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  • Inside Corner - Center Block - Outside Corner

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  • Center Block

  • Outside Corner

MC-4190 Corners

3⅞" Height x 3⅛" Width x 7.8" Length
Best for 9' - 10' ceilings
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    • TypeCorner

    • StyleSmooth

    • ColorWhite Primer

    • MaterialPolyurethane

    • Ceiling Height9' - 10'

    • Height3-7/8"

    • Width3-1/8"

    • Length7.8"

    Product Description

    Quick Facts

    • Made from dense durable Polyurethane
    • Lasts a lifetime
    • Mold and mildew resistant
    • Lightweight and easy to install
    • Safe to install indoors or out
    • Exquisite detail and design consistency
    • Won't crack or splinter like wood or hard plastic
    uDecor accent features are manufactured with a dense architectural polyurethane compound (not Styrofoam) that allows it to be very durable and 100% waterproof. This material is delivered pre-primed for paint. It is installed with architectural adhesive and/or finish nails. It can also be finished with caulk, spackle and your choice of paint, just like wood or MDF. A major advantage of polyurethane is that it is safe to install in rooms with the presence of moisture like bathrooms and kitchens. This product will not encourage the growth of mold or mildew.

    For more how to videos, visit our DIY learning center



    4.3 out of 5 stars
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    Justin B.Omaha, NEApril 15, 2018

    5 out of 5

    Make your life easy

    If you have any corner work on an older home - safe the headache and buy these. Our house was built in y5 and I guarantee you a simple 45 degree miter cut wouldn't have done the job - These made the whole job a breeze. Just wish they had matching ones for outside corners -- but there was only one of these so I spent the time and made a few cuts to get the miter cut for this one right.

    • Inside

    Paul M.Fairless Hills, PASeptember 14, 2017

    5 out of 5

    very happy

    product A as a first time installing found these corner pieces very easy to make the corner and looks great

    • Inside

    Scott L.Carlsbad, NMSeptember 12, 2017

    5 out of 5

    Beautiful and easy to install

    The headline says it all.

    • Inside

    Donna D.Medford, NYAugust 22, 2017

    5 out of 5

    Love these

    They look like they will be great - I'll post a picture when they are up

    • Middle

    Sylvia K.Lynchburg, VAJuly 11, 2017

    5 out of 5

    Looks great - just what I needed!

    For some reason my 48 year old house has molding everywhere except in one hallway leading to the bedrooms. These were the connecting features between the original and the new molding. They were a little big, but my contractor had no problem cutting them down and they fit perfectly.

    • Outside

    Kathleen W.Los Osos, CAJuly 2, 2017

    5 out of 5

    Simple to install

    Makes installing crown molding easy as could be. The project went much faster than expected by using these corners. Makes the room look very special!

    • Inside

    Michael B.Asheville, NCNovember 1, 2016

    5 out of 5

    Works Great with CM-1040 Crown Molding

    Makes for easy work in the corners with no aggravating angled cuts to fool with.

    • Inside

    Steven S.North Bergen, NJAugust 20, 2016

    3 out of 5

    Good but some issues

    We like the looks of these corner blocks. Installation is pretty straight forward. I did notice that on my most recent order the blocks were not quite square make it necessary to spend a fair amount of time trimming them to make to fit. They look much better if you have a snug fit with less caulking to fill gaps.

    • Inside

    Steven S.North Bergen, NJAugust 20, 2016

    3 out of 5

    Very nice

    I've only installed one of the outside corner blocks and have no issues with it. It looks good. Be aware that is is fairly large as in necessary to cover the corner.

    • Outside

    Greg D.Dequincy, LAJune 15, 2016

    5 out of 5

    looks great made the corners POP!!!

    easy to work with. made installing crown into corner so much easier. makes corners more elegant

    • Inside

    Joseph C.Elkins, WVMay 23, 2016

    1 out of 5

    Horrible quality!

    Corners were so crooked that I could not even trim them and make them square enough to use. Sorry for the experience you had with these corners. We haven't had any customer issues in the past with them but will have our warehouse do an inspection of the current inventory. Sometimes walls aren't 90 degree angles and can cause issues as well, but regardless of the reason we want your project to be a success so we'll take care of whatever is needed to help get it done. Thanks for letting us know of the issue!
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    • Inside

    Joel D.Monroe, WIFebruary 4, 2016

    5 out of 5

    Great items.

    These decorative items are nicely made, easy to install and gave our room that polished look we were looking for. One man installation! Delivery was more than prompt and customer service is A .

    • Inside