SPC is the leader in the design, development and manufacturing of Outside Plant (OSP) enclosures. SPC designs and produces a complete line of enclosure cases and cabinets for xDSL, (HDSL, HDSL2/4, etc.), T1, ISDN, DDS, and broadband/DSLAM networks.
These enclosures operate in the harshest environments, protecting electronics from heat, humidity, dust and other adverse conditions.
SPC Enclosures Catalog

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Universal? SPC enclosures are designed to hold various styles of repeater cards from all the popular electronics suppliers.
- Universal in Technology:
The enclosures support a variety of networks: T1, HDSL, HDSL2/4, DDS, ISDN
- Universal in Card Form:
The following circuit card mechanics can be used in our enclosures and are commonly found in telecom networks today.
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Card Styles
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Card Characteristics
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Manufacturers
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Mfr Description
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819
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SPC Round CoolPro® Series
Fits in (2)T1 mini repeater slots using first slot’s 12-pin connector
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ADC Telecom
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HRX819
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“H” Card
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Pairgain (ADC)
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HDU-439
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Adtran
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HRE-819
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Double Wide
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SPC Round CoolPro® Series
Typical ISDN, DDS & HDSL form factor
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ADC Telecom
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HRX
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“H” Card
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Pairgain (ADC)
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HDU-437
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Adtran
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HRE-439
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Mini Repeater
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SPC Round CoolPro® Series & CoolMaster™ Series
Typical ISDN, DDS & HDSL form factor
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ADC Telecom
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H2RX
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Mini Doubler
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Pairgain (ADC)
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HDU-409
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T1 Repeater
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Adtran
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HRE-239
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239 Mechanics
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Single Wide
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