Extron STP22/1000 (part number 22-156-03) — a 1,000 ft spool of single-pair 22 AWG shielded control and audio cable from the Extron STP Series.

Bulk cable is where an AV installation either holds together or starts generating service calls, and the STP22 is the slimmest single-pair option Extron builds for that job. Under the gray PVC outer jacket sits one twisted pair of color-coded tinned copper conductors — red and black — wrapped in a 100 percent aluminum foil shield with a tinned copper drain wire bonded to the jacket so that terminations strip quickly and cleanly. Polypropylene insulation and a PVC inner jacket hold the geometry steady over a long pull, and the finished cable measures only 0.135 in across.

Key Capabilities

• One 22 AWG shielded twisted pair of 0.030 in tinned copper conductors, color coded red and black.
• Aluminum foil shield at 100 percent coverage, with a bonded tinned copper drain wire.
• Nominal impedance of 45 ohms across the pair.
• Nominal outside diameter of just 0.135 in (3.43 mm), the smallest in the STP Series.
• Non-plenum gray PVC construction rated NEC CM and C(UL) 60 °C.
• SuperFlex jacket carries sequential footage numbering; 1,000 ft (304.8 m) ships in a self-dispensing box.

Where It Is Used

Reach for this spool when serial control links and audio have to travel through walls, conduit or raceway that is not part of a return-air plenum. Typical homes for it include boardrooms and huddle spaces, lecture halls, worship venues, courtroom AV, broadcast support rooms, and rack-to-rack backbones in hospitals and command centers.

Specifications at a Glance

• Conductors: 1 shielded twisted pair, 22 AWG (7/30) tinned copper, 0.030 in (0.76 mm)
• Nominal core OD 0.046 in (1.17 mm); nominal overall OD 0.135 in (3.43 mm)
• Jacket: gray PVC, non-plenum; NEC CM, C(UL) 60 °C
• Standard length 1,000 ft (304.8 m); shipping weight 17 lb (7.7 kg)

Also referenced as Extron STP221000, STP22-1000, part number 2215603.