WDI custom manufactures trim kits for window and door openings. Our customers provide us with their window size specifications and we create pre-finished and ready-to-install trim kits, for a perfect fit and quick installation.


We’ve made the process simple. First, gather frame size or exact size dimensions of your window (or door), along with the specific window set-back. Second, transfer the width(s) x height(s) as outside jamb box width x height and calculate your extension jamb depth by subtracting the window set-back with the overall wall thickness. Lastly, choose your trim look – see options below – and email us a copy. We will contact you shortly after receiving your email to review your order with you and make sure everything is clear and your questions are answeredInstallation is even easier!


View our ‘Installation’ page to see just how painless the installation of WDI Trim Kits actually are.


WDI offers many different options and variations as standard when it comes to manufacturing trim kits. You can see these options below. For custom trim kit shapes and material options, please navigate to our ‘Custom Options’ page for more information.

Standard WDI Trim Kits include Jamb, Casing, & Stop materials and are rectangular [or square] in shape.

WDI Trim Kits ordered for standard windows shapes will include 4-sides for windows & 3-sides for doors. By default, trim kits ordered for windows [4-sides] will be assembled at our facility, which means jamb extension boxes are built and attached to pre-mitered casing frames. Trim kit stop material is pre-mitered and fit to each individual window trim kit. These pieces will be packaged with each trim kit as loose parts so they are able to be placed in the correct position at the time of the install. Trim kits ordered for doors [3-sides] are not be pre-assembled at our facility.

Standard wood species options offered are Red Oak, Maple, & Poplar.

Each and every piece of wood used at WDI Company originated from trees sourced throughout our beautiful country. With this comes drastic variations in any specific trees’ climate, weather, natural environment, etc. in which it’s had to survive in, and thus, natural variations occur. Not only do variations occur, they are common and can range quite drastically even within the same wood species. One of many common natural variations in wood species is called “wood grain.” If you take a look at the images below, you’ll notice the “darker” streaks – these are grain patterns and are just as unique as our fingerprints. It is highly likely, nothing less than guaranteed, that wood grain patterns will vary within each and every piece used to form our WDI Trim Kit product – this is NOT a bad thing! Natural variation in wood grain, from piece to piece, is one of the many great aspects of wood working and one of the many reasons we find wood beautiful. Whether it be one of the standard 3 wood species below or any of the non-standard, or custom, wood species options we can get our hands on, wood is a naturally growing product with natural variation. Prior to ordering, it is important to understand natural variations, such as differing grain patterns, play a part in overall appearance of any finished product that leaves our facility. Click on the following link to view an acceptable grain variation chart – Red Oak Wood Grain Variation Group.

Standard casing profiles include Ranch (113), Colonial, (115), Princeton (118), K-Style (119), & Hook-Strip (120) and are offered at the following widths presented in the image below.

Standard color options are #50 – #75 as presented in the images below.

WDI Color #’s on Oak are stains #51-#54, #56-#71, & #74, colors on Maple are stains #50 & #55, our standard white paint #75 is on Poplar (or paint-grade wood species), and colors #72 & #73 are clear top coat and unfinished options, respectively, which are non-specific to wood species. Please refer to a physical color swatch when ordering.

WDI Color Numbers: #50 – #75. Important: Natural variations, like wood grain, play a role in the overall finished color. For example, wider or darker grain may make the overall finished color appear darker. This uniqueness is one of the reasons natural wood is such an appealing material! Looking at the colors shown above on an electronic screen may not be completely accurate representations of our colors due to factors such as screen resolution, screen brightness, etc. When choosing a color, always pick from our physical color swatch. Our standard color samples have been update for 2019 – Samples dated prior to 2019 will no longer be of use beginning March 1st, 2019.