A few facilities may have thickly painted or wooden doors. This may diminish the magnetic grip of the Tempshield™.
When either of these situations exists we recommend purchasing a small package of double sided Velcro. Attach the Velcro to each corner of the Tempshield™ (as depicted below). Attach the other side of Velcro to the corner of the window or the outside of the window door frame. Line up the Velcro pieces and apply the cover. This Velcro attachment will substantially improve the magnetic stick and grip of Tempshield™.
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