supply of supply of solar water heating system , supply of solar water heating system without heat exchanger, capacity 300lpd confirms to is:1297 6:1990 with latest amendment supply and installation of solar water heater 300 liter capacity with suitable stand a nd other accessories, conformity to standards for solar water heating system -is: 12976:1990 with latest amendm ent, electrical heater back up capacity -2kw, material of sheet for absorber-copper, suitable for type 2 warm (are as where ambient temp is moderate and do not normally below 5 deg. c, installed on terrace, connecting to existin g water tank, hot water supply and seamless integration to existing system using standard i inch cpvc pipes, accep ted make: racold/supreme/v guard/hykon/cascade/bosch. [ warranty period: 60 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 la cs ] ]