doors 101

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Installing a door properly is one of the more challenging home improvement jobs and can be complicated even for professional contractors. Without the right tools, the job can take up to half an hour and the assistance of other people. While mistakes in other areas can often be easily addressed, mistakes in hanging a door can have long-lasting consequences. The door may not hang flush, it may be drafty and it may not even close. Whether you are learning how to install a door, how to fix a door or how to install a pre hung door, we can help you learn what to do and what not to do.


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CHEATAH door level

CHEATAH door level

The CHEATAH™ door level kit makes installing a door simple and quick. Attach the CHEATAH directly to the top and sides of the door. The four precise levels work together to allow easy, accurate positioning of the door. Once level, the built-in shim guides let you correctly shim the jamb. The CHEATAH works on all types of doors with perfect results each time. Our door level kit is extremely durable and carries our 100 Guarantee™. Save time and money installing doors right the first time, every time. The JENTRA CHEATAH door level puts advanced speed and precision capability into the hands of all skill levels during installation, from DIYers to skilled artisans. This results in improved installation and function of doors, resulting in fewer warranty callbacks. Therefore, stakeholders of the door level include all steps in the industry: door manufacturers, distributors, contractors, and building owners.

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don't take our word for it

Some of the top media outlets in the country are talking about us.


  • ProSales

    ProSales Magazine

    One of the largest publications available to the pro construction trade.

    “…reduces installation-related callbacks and warranty claims.“

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  • Builder Magazine

    Builder Magazine

    A top magazine produced by Hanley Wood, targeted directly to builders.

    “An ingenious door-installation tool that will speed and ease the way things are done.“

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  • DIY's "I Want That"

    The DIY Network

    Featured on the popular show – “I Want That”.

    “…never, ever hang a crooked door again. Not with this!“

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  • LBM Journal

    LBM Journal

    The Mid-West’s trusted source for the most up-to-date construction news.

    “…helps to reduce the burdens that can come with door installation.“

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    meet our team

    It starts with the people.


    • Travis Kelley - CEO/Co-Founder

      Travis Kelley - CEO/Co-Founder

      Accomplishments in retail sales management with Scherer Brothers Lumber, J.B. O’ Meara and Marvin Windows.
    • Jennifer Kelley - Product Steward/Co-Founder

      Jennifer Kelley - Product Steward/Co-Founder

      Background in office-management, customer service and the “Jen” in the JenTra.