Overview
Choose BU-1000-1-12 when you want high heat output in a compact, service-friendly package with adjustable mounting feet. The rear outlet feeds your plenum/ducting, while the twin blower moves air quietly for fast, even cab heat.
Key Features
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Output & airflow: 35,000 BTU/hr, 430 CFM, 3 speeds
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Electrical: 12V system (13.6 VDC nominal), ~16 A
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Connections: 5/8″ heater hose (x2), rear exit
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Mounting feet: 1/4-20 threaded holes (x4) on a 2.75″ × 2.75″ pattern; each foot can mount in 4 positions
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Adjustable cabinet height: 6.45″ to 7.35″ to align with panels
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Finish: Black powder-coat steel cabinet
Dimensions & Wiring
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Overall (approx.): 16.02″ L × 6.45–7.35″ H × 5.68″ D
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Face width: ~17.12″ across mounting
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Blower module leads: MIN+ / MOTOR+ / MAX+
Service Parts (major items)
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12V blower assembly, heater coil, mounting feet (x2), front housing & side panels, foam seals, and hardware.
Specifications
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Model: BU-1000-1-12
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Type: 12V cab heater, rear exit, with mounting feet
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Heat Output: 35,000 BTU/hr
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Airflow: 430 CFM, 3 speeds
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Electrical: 13.6 VDC, ~16 A
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Hose Connections: 5/8″ (x2)
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Finish: Black powder-coat
Applications
Heavy truck, agriculture, construction, forestry, and specialty equipment needing a compact 12V heater with flexible foot mounting and rear-exit plumbing.

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