4' Complete Assembled Lo-Trim Baseboard, 300 BTU

Argo Lo-Trim II Baseboard Radiation – 4 Ft. Hydronic Heating Element

The Argo Lo-Trim II Baseboard (Model 55LT27-4) is a 4-foot hydronic heating assembly designed for residential perimeter applications. Engineered for efficient, quiet, and uniform heat distribution, this low-profile unit combines performance with reliable material construction. Suitable for new construction or retrofit installations, it integrates seamlessly with 3/4" copper tubing systems.

Product Features

• Low-Profile Cabinet – Overall height and depth are minimized to allow for tight clearances and a clean architectural finish along interior basewalls.
• Corrosion-Resistant Finish – Cabinet fabricated from galvanized steel, coated in a white powder enamel for long-term durability in residential environments.
• Efficient Heat Output – Aluminum finned copper tube element delivers rated performance of approximately 300 BTU/hr per linear foot (based on standard 180°F water temperature, no carpet interference).
• Quiet Operation – Cradle-type support and expansion-allowing design reduce thermal noise and eliminate rattling during temperature fluctuations.
• Integrated Damper – Manual damper assembly allows for basic airflow control during seasonal transitions or in balancing multiple zones.

Specifications

• Model: 55LT27-4
• System Type: Hot water (hydronic)
• Nominal Length: 48 inches (4 ft.)
• Pipe Size: 3/4" CTS (copper tubing standard)
• Output Rating: 300 BTU/hr per foot (nominal)
• Materials: Galvanized steel cabinet; copper tube with aluminum fins
• Finish: White powder coat

Installation Notes

Unit is supplied fully assembled with front cover, back panel, support brackets, and damper. For optimal results, ensure mechanical fastening to wall framing and allow clear airflow beneath and around the unit. Compatible snap-on accessories (end caps, corners, splice plates) are available for field customization. While installation is straightforward for trained personnel, follow all local code requirements regarding hydronic loop placement and mounting clearances.

Contractor Considerations

• Fast Installation – Preassembled housing simplifies field layout and alignment.
• Service Access – Snap-on cover allows easy access to heating element for inspection or flushing during maintenance intervals.
• System Versatility – Can be used in series or parallel loop systems with zone valves or circulators as required by building design.