Signals Defense Product Catalog
The 2026 Signals Defense catalog is here and contains information on our best selling Signals Defense products including: RF/IR window films, foils, tapes, paints, caulk, and Lockmasters RF/STC doors and locks.
Signals Defense requests your contact information in order for us to mail samples, email specifications, and download documents.
Building Shielding Experts
Thank you for considering Signals Defense for your building shielding needs. We are thrilled to share our product catalog for your reference. We have continued to expand our product line to cover all of your shielding requirements.
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Office Privacy Series: 4 Common Misconceptions About Window Film
Mention window film applications to some people and they sometimes have outdated impressions of the technology. When this is the case, you will typically hear something about a botched DIY (Do-It-Yourself) car window tint job that turned purple and bubbled up or...
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3 Easter Court
Suite L
Owings Mills, MD. 21117