Parasene Soil Warming Cables 12 metre - 240 Parasene Soil Warming Range Build your own propagator with this Parasene soil warming cable or use as under soil heating in your greenhouse. Soil warming cables are mains operated, fully insulated, safe and easy to use (full instructions supplied). Soil Warming Cables are recommended for areas of 5 sq.ft., 10sq.ft., 20sq.ft., and 40sq.ft., respectively. 240 - 150w 40ft/12m RRP £37.89 Free 48 hr UK delivery Price: £30.63 (Excluding VAT at 17.5%) Quantity: