Oversized Sovereign 4 Tube Cast Iron Radiators 20"
Oversized Sovereign 4 Tube Cast Iron Radiators 20"
$1,540.00
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Classic Character, Extended Coverage
The Oversized Sovereign 4 Tube 20" Cast Iron Radiator brings the charm and craftsmanship of this compact classic to a grander scale—ideal for longer walls, bay windows, and open-plan spaces where height is limited but consistent heat output and period styling are essential. Its elegant proportions and four-tube profile deliver reliable warmth while preserving the refined detail of late Victorian and Edwardian design.
Each oversized radiator is cast in Europe using original 19th-century patterns and assembled by hand in our workshop. Built to order in your choice of painted, metallic, or polished finish, the Sovereign 20" offers outstanding flexibility and heritage appeal—sought after by designers, restorers, and homeowners alike.
To ensure safe delivery and practical installation, oversized models are shipped in two or more sections, complete with joining threads, gaskets, a radiator assembly tool, and full instructions for straightforward on-site reassembly. Pressure tested to 8 bar, compliant with EN442 standards, and backed by a 25-year guarantee, this is a reliable and timeless heating solution built to last.
📞 Call 212 814 6888 to customize or order your Oversized Sovereign radiator today.
Product specifications
| Steam BTU output per section | |
|---|---|
| BTU output (Delta 50) per section (Regular gas Boiler) | |
| BTU output (Delta 30) per section (Heat pump) | |
| EDR sq ft (Equivalent Direct Radiation) | |
| Volume (gal) | |
| Weight (lb) | |
| Section Length (in) | |
| Height (in) |
Finishes and Lead Times
By default all of our cast iron radiators come in factory primer. Our lead times do vary throughout the year and depending upon the product finish chosen.
Painted Cast Iron Radiators
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We are able to paint radiators in any RAL colour, please contact us on 212 814 6888 to discuss your requirements.
Metallic Cast Iron Radiators
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Metallic polished radiators are priced based on size with larger radiators costing slightly more.
Powder Coated Cast Iron Radiators
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Powder coated radiators are priced based on size with larger radiators costing slightly more.
Hand Polished Cast Iron Radiators
Hand polishing cast iron radiators is a very time consuming process. Each section is individually polished with a series of bespoke polishing wheels.
We only polish the visible areas - the front, the top and on the end sections but not on the back which would be placed against the wall.
Branded Paint for Cast Iron Radiators
We are able to paint your cast iron radiators in any Farrow and Ball, Sanderson, Little Greene, Fired Earth or any other branded paint.
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| We also Stock the complete range of Farrow and Ball Colours | We also have access to the beautiful Heritage range of paints from Little Greene. |
Other paint colours are available and other RAL powder coat colours finished can be ordered.
If the colour you require is not above, please call us on 212 814 6888
Oversized Radiators
Our cast iron radiators are normally delivered via third-party pallet networks, using standard-sized pallets. For radiators that exceed these dimensions, we supply them in pre-assembled blocks along with the necessary assembly tools and clear, easy-to-follow instructions to ensure straightforward on-site assembly.
Full Specification Table
| Product Code | Columns | Steam BTUs | BTUs (ΔT=50) REGULAR BOILER |
BTUs (ΔT=30) HEAT PUMPS |
EDR (sq.ft) | Radiator Length (in) | Radiator Weight (lb) | Primer | Painted | Powder Coated | Metallic |
|---|---|---|---|---|---|---|---|---|---|---|---|
| S4C-480-21 | 21 | 6888 | 4473 | 2268 | 28.77 | 50.56 | 212 | $1592 | $2012 | $2033 | $2201 |
| S4C-480-22 | 22 | 7216 | 4686 | 2376 | 30.14 | 52.92 | 222 | $1644 | $2084 | $2106 | $2282 |
| S4C-480-23 | 23 | 7544 | 4899 | 2484 | 31.51 | 55.28 | 232 | $1696 | $2156 | $2179 | $2363 |
| S4C-480-24 | 24 | 7872 | 5112 | 2592 | 32.88 | 57.64 | 242 | $1748 | $2228 | $2252 | $2444 |
| S4C-480-25 | 25 | 8200 | 5325 | 2700 | 34.25 | 60.0 | 253 | $1800 | $2300 | $2325 | $2525 |
| S4C-480-26 | 26 | 8528 | 5538 | 2808 | 35.62 | 62.36 | 263 | $1852 | $2372 | $2398 | $2606 |
| S4C-480-27 | 27 | 8856 | 5751 | 2916 | 36.99 | 64.72 | 273 | $1904 | $2444 | $2471 | $2687 |
| S4C-480-28 | 28 | 9184 | 5964 | 3024 | 38.36 | 67.08 | 283 | $1956 | $2516 | $2544 | $2768 |
| S4C-480-29 | 29 | 9512 | 6177 | 3132 | 39.73 | 69.44 | 293 | $2008 | $2588 | $2617 | $2849 |
| S4C-480-30 | 30 | 9840 | 6390 | 3240 | 41.1 | 71.8 | 303 | $2060 | $2660 | $2690 | $2930 |
| S4C-480-31 | 31 | 10168 | 6603 | 3348 | 42.47 | 74.16 | 313 | $2112 | $2732 | $2763 | $3011 |
| S4C-480-32 | 32 | 10496 | 6816 | 3456 | 43.84 | 76.52 | 323 | $2164 | $2804 | $2836 | $3092 |
| S4C-480-33 | 33 | 10824 | 7029 | 3564 | 45.21 | 78.88 | 333 | $2216 | $2876 | $2909 | $3173 |
| S4C-480-34 | 34 | 11152 | 7242 | 3672 | 46.58 | 81.24 | 343 | $2268 | $2948 | $2982 | $3254 |
| S4C-480-35 | 35 | 11480 | 7455 | 3780 | 47.95 | 83.6 | 354 | $2320 | $3020 | $3055 | $3335 |
| S4C-480-36 | 36 | 11808 | 7668 | 3888 | 49.32 | 85.96 | 364 | $2372 | $3092 | $3128 | $3416 |
| S4C-480-37 | 37 | 12136 | 7881 | 3996 | 50.69 | 88.32 | 374 | $2424 | $3164 | $3201 | $3497 |
| S4C-480-38 | 38 | 12464 | 8094 | 4104 | 52.06 | 90.68 | 384 | $2476 | $3236 | $3274 | $3578 |
| S4C-480-39 | 39 | 12792 | 8307 | 4212 | 53.43 | 93.04 | 394 | $2528 | $3308 | $3347 | $3659 |
| S4C-480-40 | 40 | 13120 | 8520 | 4320 | 54.8 | 95.4 | 404 | $2580 | $3380 | $3420 | $3740 |