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.

How Does RF Shielding Work?

How Does RF Shielding Work?

Radiofrequency shielding, or simply RF shielding, is a specially-engineered film with an electromagnetic shield that blocks radiofrequency radiation. Installing an RF shield in an enclosed area like an office, a conference room, or a data room creates a secure space...

Do Low-E Coatings Block RF Signals

Do Low-E Coatings Block RF Signals

 Does Low-E block RF Signals? Many businesses and entities are increasingly concerned blocking RF Signals and safeguarding their properties from electronic eavesdropping today - and rightfully so. Any infiltration of systems can lead to stolen data, public distrust...

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OFFICE LOCATION

3 Easter Court

Suite L

Owings Mills, MD. 21117