Neptune III 620mm

Castrads CI/NE3/620 1653670
2025-01-01 From: £120.00
Currently out of stock

Mid-height, big output with modern curves and a ridged shoulder makes the Neptune III a bold feature in contemporary interiors. A timeless design shown here in Farrow & Ball Pigeon. 

Print tech specs

  • 0mm deep, 620mm tall
  • Completed in 7 - 10 working days
  • Custom-built and hand-finished in Manchester

*price per radiator section

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Modern curves and a ridged shoulder make the Neptune a bold feature in contemporary interiors. Sleek feet and a striking pinched top offer an updated aesthetic to a design inspired by the classic Princess radiator.

Technology and tradition collide in this modern take on a classic

Bespoke built to any length and also available in three heights. We love Neptune radiators in Natural Pewter with Windsor valves and accessories in Natural Pewter

Pneumatically assembled in Manchester and built to 1.1m for delivery in one piece or up to 2m with partial home assembly. All our radiators are individually pressure tested using industry-leading technology. Naturally, all radiators are covered by our 10-year cast-iron guarantee. 

Tech specs

Heat Output
Heat output per section: 119 Watts / 406 BTUs
Leg section height: 620mm
Middle section height: 560mm
Section length: 80.5mm
Radiator depth: 200mm
Bottom inlet to floor: 105mm
Top inlet to floor: 565mm
Pipe centres to skirting board: 102mm
Empty weight leg section: 10.2kg
Empty weight middle section: 9.6kg
Internal volume
Internal volume section: 2.6 l
Construction materials
Radiator sections: Cast iron
End caps and reducing bushes: Cast iron


Our radiators are hand assembled so we can’t give 100% accurate pipe centre measurements before they've been made. Let us know when placing an order if your plumber is planning to lay pipes before it arrives and we’ll send you the exact measurements usually within 72 hours of an order being placed. Your plumber can then drill holes in the floor and position the pipework with absolute confidence.

Installing cast iron radiators

We supply all our radiators with 1/2” BSP connections to pair with all of our valves and most valves available elsewhere too. We can provide any valve configuration but as standard we’ll always fit them bottom opposite ends (BOE).

Our radiators are sold in over 60 finishes.

See them all here