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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Should I use Low-E glass or window films to block heat?
If you have kids and they've ever left crayons in the back seat of the car on a hot summer's day, you have had an involuntary crash course on the power of the sun. Yet even without adding a substance with such a low melting point as a crayon to the mix, the sun can...
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Owings Mills, MD. 21117