The 13.5 tends to squish a little more than 11. If it sits outside long enough, it is a bit more brittle too. We've had some minor issues where plowing in rocky areas and the rocks can sometimes squish it.
Regards, Chuck On Fri, Apr 20, 2018 at 12:18 PM, <[email protected]> wrote: > You get 5000 feet on 7 foot reels too. It is lighter. Lots of good > reasons to use it. > > *From:* Adam Moffett > *Sent:* Friday, April 20, 2018 10:07 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] OT One for the borg > > I don't know jack about the duct, but 2c per foot? $2,000 over 20 miles. > > If you still need the thicker wall in some circumstances, then you might > lose two grand in the cost of stocking and shipping and handling two rolls > of tube vs one roll of tube. > > The first time somebody brings the wrong roll to a job site and has to go > back, then you've lost more than two grand of productivity. Seems like it > couldn't be worth it to me. But I don't know jack. > > -Adam > > > > ------ Original Message ------ > From: [email protected] > To: [email protected] > Sent: 4/20/2018 11:11:36 AM > Subject: [AFMUG] OT One for the borg > > > I am considering using some SDR 13.5 duct where I have always used SDR11 > before. > > The DR stands for diameter ratio. Ratio between wall thickness and outer > diameter (I think). Higher numbers mean thinner wall thickness. > > Others use the 13.5 unless they get into rocky areas. I am a bit gunshy > as the cost is only about 2 cents per foot different. > Anyone here have any experiences they can relate? > >
