4 x 4 Polar Grid Coordinate Whiteboards

Our Price:
4 x 4 Polar Grid Whiteboard
4 x 4 Polar Grid Whiteboard4 x 4 Polar Grid Whiteboard4 x 4 Polar Grid Whiteboard

OptiMA™ 4' x 4' polar grid coordinate whiteboards come in either a magnetic or a more economical non-magnetic dry erase format. Sixteen concentric circles on 1 7/8" centers.

If you order the magnetic polar coordinate board it simply means that you can use magnets and magnetic accessories in conjunction with the dry erase writing surface but if you're not planning on using any kind of magnets in your lesson plans why pay the extra cost?

Our more economical non-magnetic polar coordinate whiteboards have the exact same writing surface as our magnetic polar boards. The difference is whats behind the writing surface. The magnetic boards are mounted onto a steel surface so that they will accept magnets. The steel substrate is more expensive than our 1/4" PVC material so they cost more.

Both grid board options have the same, really nice satin anodized aluminum trim and full-length marker tray. The units are 1/4" in overall thickness and each board comes complete with installation hardware.

Made in the U.S.A. and school purchase orders are accepted.

Model Number Board Size
(Height x Width)
Shipping Option Weight
GR-PC-MA404 4' x 4' Non-Magnetic Polar Grid Board Truck* 35 lbs.
GR-PC-HB404 4' x 4' Magnetic Polar Grid Board Truck* 45 lbs.

  • Too large to ship by UPS
  • School purchase orders accepted

Product Features:
  • Overall Size: 4' Tall x 4' Wide.
  • Available in a Magnetic Receptive or Non-Magnetic Format.
  • 16 concentric circles on 1 7/8" centers.
  • Lines to circumference are 15" apart.
  • The outside diameter of the polar graph is 45"
  • Magnetic Board weighs approximately 41 lbs.
  • Non-Magnetic Board weighs approximately 35 lbs.
  • Standard installation hardware included.
  • Normal lead-time is 3-5 business days to ship from Massachusetts. Add transit time to your location.
  • This design can be customized. Contact customer service for assistance.
  • Ship by Truck - too large for UPS.
  • School Purchase Orders Accepted.
  • Made in the U.S.A.
For Best Results:
  • Note that Expo or other Bristle type erasers may permanently damage the writing surface.
  • Do not use any cleaning chemicals which contain ammonia. Most glass cleaner contain ammonia.
  • Do not use any type of scrubbing sponges or other abrasive to clean the boards.
  • We strongly recommend using a soft cloth or our Opti-Wipe™ washable micro-fiber cleaning cloths
  • Use only high quality dry erase or damp erase markers.

COVID-19Current Status

To our valued customers,

We are open -- all products and lead times listed on the website are accurate. We will continue to monitor the situation and provide updates should anything change.

At OptiMA we are monitoring the latest news about COVID-19. And like many of you, our number one priority is keeping our customers, partners, suppliers and employees safe and healthy. We believe it's important to do our part to help reduce the transmission of COVID-19, while remaining accessible to our customers.

As we diligently follow the guidance and best practices put forth by the Centers for Disease Control and Prevention (CDC) regarding work-from-home practices and daily cleaning routines, we remain online and in operation.

As a US manufacturer we feel prepared to weather this storm and continue to serve our loyal customers in a safe and productive manner.

As always, we look forward to serving you. If you have any questions, please feel free to contact us at info@mywhiteboards.com or 866-366-1500.

WARNING: This product can expose you to chemicals including Formaldehyde (gas) and Wood dust which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov www.P65Warnings.ca.gov