Lakeside Products MagnaBox Pen Extension Kit

$319.99 $423.59

Lakeside Products MagnaBox Pen Extension Kit

Designed for use with the MagnaBox Whelping Box

The MagnaPen Extension pen, is the perfect addition to the MagnaBox. This pen extension kit easily attaches to the front of the whelping box and uses the same hook and slot joints as the whelping box.  The MagnaPen incorporates the same 1/3 and 2/3 height doors for easy access and control. It is simple to clean and keep clean.  FDA approved, HDPE plastic (a common material for kitchen cutting boards) is UV resistant and will not rust, stain or discolor.  Unlike wood and other plastic whelping boxes, the MagnaPen Extension Pen has no cracks, crevices, porous or painted surfaces to retain contamination.

The MagnaPen is available in either solid sides (like the MagnaBox) for controlling drafts and easy cleanability or slatted sides to allow for airflow and visual interaction.


    Size  Inside Dimensions Outside Dimensions
    XX-Small 19 1/4" x 21 1/4" 24" x 24" x 12" tall
    X-Smallk 24 3/4" x 27 1/4"
    30" x 30" x 15" tall
    Small 30 1/4" x 32 3/4" 36" x 36" x 18" tall
    Medium 36 3/4" x 39 1/4" 42" x 42" x 18" tall
    Large 42 3/4" x 45 1/4" 48" x 48" x 20" tall
    X-Large 48 3/4" x 51 1/4"
    54" x 54" x 24" tall 

    Construction: Quality solid materials along with unique hook and slot connectors and a lightly textured surface make cleanup a breeze. Easily wipes clean with a rag and sanitizing solution and when disassembled can be quickly cleaned and sanitized with a power washer. There are no plastic welds, hidden slots, fasteners, or corrugations that capture and retain contamination and are nearly impossible to clean and sanitize.

    Assembly:requires no tools and no fasteners. No small parts to insert while aligning bulky components. No Velcro to wear out or replace. No adhesive or painting is required.

    Product Video

    Manufacturer Warranty

    Lakeside Products warrants to the original purchaser this product to be free of defects in materials and workmanship for a period of one year from the date of purchase (proof of purchase required). Specific exclusions from this warranty include damage caused by accident, improper use or abuse, including damage caused by pets. Purchaser is responsible for return shipping and handling charges. This warranty is the only warranty made by Lakeside Products and replaces any and all previous warranties.

    MagnaBox Whelping Boxes ships from Iowa via FedEx Ground

    • Use the map below to estimate shipping transit time to your location


      Bather Box us shipping map
      Fast Shipping

      We do our best to ship FAST and make it easy for you.  At the top of this page, we have noted how long it normally takes to process and ship your order.  You can then use the map above to estimate delivery times.  We will send you an email confirmation with the tracking number as soon as your order ships

      Please see our Shipping Policy for full details.


      Things don't always work out, we get it.  We'll do our very best to make your return simple and easy.  Please email us and we'll provide all the return instructions for your specific item and an RMA number (required). Please see our Return Policy for full details.

      Customer Reviews

      No reviews yet