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| Explosion Relief Doors by Philadelphia Safety Devices By installing Philadelphia Safety Device explosion relief doors, you eliminate the time and cost of membrane replacement forever. Because unlike single use metal vents, PSD gives you a real door. A door that maintains a positive seal until it opens under precise and predetermined pressure conditions. A door that once opened, remains open until you close it- with little force and no tools. |
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| URL: | http://www.philasafetydevices.com |
| Added: | March 10, 2008 |
| Hits: | 3 |
| Category: | Business & Economy » Services |
| Additional: | Related Keywords - Alexa Data |
