4 Ft. Baseray Cast Iron Baseboard Complete Assembly (13.6 sq ft)

Burnham Baseray Cast Iron Baseboard – 4' Complete Assembly, Model 9A3C

The Burnham Baseray 9A3C baseboard is a 4-foot complete cast iron radiation unit designed for hot water or low-pressure steam systems. With its high thermal mass and consistent output, the Baseray line provides quiet, even heating across a broad surface area, making it ideal for both retrofit and new construction projects.

Engineered for Performance and Durability

• Cast Iron Heat Retention: Provides sustained warmth even after the boiler shuts off, reducing system cycling and improving overall efficiency.
• Hydronic Compatibility: Suitable for use with both steam and hot water systems; integrates seamlessly with residential and light commercial boilers.
• Full Assembly: Includes joined intermediate sections plus factory-supplied left and right end caps for a streamlined installation.
• Quiet Operation: Natural convection eliminates the expansion noise commonly found in fin-tube systems.

Technical Specifications

• Model: 9A3C
• Type: Complete Assembly (includes 9A1A Intermediate Section + End Trim Kit)
• Length: 48 inches (4 feet)
• Output: 610 BTU per linear foot @ 170°F average water temperature (hot water)
• Material: Cast iron
• Mounting: Floor-mounted with wall-clearance alignment
• Surface Area: 13.6 square feet of effective radiation

Installation Overview

The Baseray 9A3C is designed for standard floor-mount applications and is compatible with 1" NPT piping for direct connection to hydronic circuits. A pitch of 1 inch per 20 feet is required for steam installations. Due to the weight and rigid iron construction, it is recommended that installation be performed by licensed professionals with experience in hydronic layout and load calculation. Gasketed push nipples allow for field assembly of longer lengths when required.

Professional Applications

• Residential Retrofits: Ideal for replacing outdated radiators in older homes where durability and heat retention are critical.
• Commercial Interiors: Provides stable perimeter heating in offices, schools, and multi-family units with minimal maintenance.
• Boiler Room Integration: Compatible with most cast iron and condensing boiler models operating under appropriate water temperature conditions.

Advantages for Contractors

• Designed for rapid installation with end trim included
• Cast iron provides natural durability and extended service life
• Ideal for gravity-fed systems or zones with longer heating cycles