Sterling 800cu75-7 NST-800 High Output Baseboard Complete 7 Foot 3/4 Inch Element

Product Description

The Sterling 800cu75-7 is a high output hydronic baseboard heater unit designed for residential and light commercial hot water heating systems. It is part of the NST-800 series and ships as a complete assembly, meaning the enclosure and the 3/4 inch copper element are included together. HVAC technicians and plumbing professionals who install hydronic radiant baseboard systems will find this unit ready to mount and connect without needing to source separate components. The 800cu75-7 delivers 5,600 net BTU per hour at 180 degrees Fahrenheit water temperature with a flow rate of 1 gallon per minute. This output level makes it suitable for zone heating in rooms with moderate to high heat loss. The unit spans 7 feet in length, giving it strong coverage along exterior walls or under windows where cold air infiltration is greatest. The element uses a sweat connection at 3/4 inch, which is standard for most residential hydronic piping systems. Installers can connect directly to 3/4 inch copper supply and return lines using standard soldering techniques. The enclosure is painted white and measures 3 and 3/8 inches thick and 9 and 1/8 inches tall. These compact dimensions allow the unit to fit along baseboards without interfering with furniture placement or floor trim. The fin and tube assembly uses aluminum fins bonded to a copper tube, which is the industry standard construction for efficient heat transfer in hydronic baseboards. The unit weighs 25.20 pounds. Note that a splice plate is not included and must be ordered separately if needed to join multiple sections. This product is a reliable choice for forced hot water heating replacement or new installation work.

• Delivers 5,600 net BTU per hour at 180 degrees Fahrenheit and 1 gallon per minute flow rate
• Complete assembly includes both the white painted enclosure and the 3/4 inch sweat copper element — 7 feet long
• Aluminum fin and copper tube construction provides efficient hydronic heat transfer; measures 3 and 3/8 inches thick and 9 and 1/8 inches tall

Product Highlights

The Sterling 800cu75-7 NST-800 high output baseboard unit ships complete with a 3/4 inch sweat element and delivers 5,600 BTU per hour, making it a straightforward replacement or new-install solution for 7-foot hydronic baseboard heating zones.

Product Information

Standard Information

• Brand: STERLING
• Manufacturer Part Number: 800cu75-7

Technical Specifications

• Series: NST-800
• Length: 7 feet
• Output Type: High Output
• BTU at 180 Fahrenheit: 5,600
• Connection Type: Sweat
• Connection Size: 3/4 inch
• Fin Material: Aluminum
• Tube Material: Copper
• Unit Thickness: 3 and 3/8 inches
• Unit Height: 9 and 1/8 inches
• Weight: 25.20 pounds
• Finish: Painted White
• Packaging: Complete