supply of pl-29230160-corrugated flexible ducting etc.pl-29230160-corrugated flexible ducting etc.,corrugated flexible ducting for machine room ventilation as per clw drawing no. 1209-1 1.344-051 alt1 (1).variations in test results-physical and chemical approx. upto plus/minus fifteen pe rcent to be accepted.ducting and guaranteed for sure fitment and performance.(2). length:450 mm pl us 20 mm/-5 mm. (3).materials - neoprene rubber with n t s wire of 1.5 mm. (4). o.d.104 mm plus(+) : upto 3 mm and minus(-):upto 4mm approx. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]