RM Cylinders Stelflow Unvented May 29, 2017 Today I fitted a 250 ltr rm stelflow indirect unvented hot water storage cylinder, it was a very straight forward and easy installation, the performance and heat recovery were very fast, I wasn't expecting to be happy with this cylinder as it was specified and supplied by my customer and came from screw fix for £716, and I hadn't had much to do with rm cylinders beforehand, but it was a nice looking unit, the expansion vessel was of a very good quality and the fixings were very good, the electric components were of a good quality and also very straight forward to wire up, I would defiantly consider these cylinders in the future.Specification,Bar Pressure 3 bar, Insulation Type 50mm, Manufacturer Guarantee 25 Years (T&Cs Apply), Diameter 545 mm Height 1728 mm, Tank Capacity 250 LtrBleecoCovering Horsham DistrictHorsham, Southwater, Broadbridge Heath, Slinfold, Billingshurst, Steyning, Storrington, Ashington, Rudgwick, Cowfold, Pulborough, Warnham, Henfield, Bramber, Upper Beeding, Partridge Green, Rusper & Faygate.