Rectorseal NFP - Telescopic Wall Sleeve - 2-1/2" ID - 2-7/8" OD

Installed the unit yesterday. No instructions on which end was to be inside and which end outside. I don't think it really matters. I installed the flange end on the outside so the base plate would lay flush on the wall. It interfered slightly with the outside 90 degree cover. It could be trimmed but I left it as it was. The only issue I see is with this is the hole through the wall has to have a slight slope to allow the drain to function. The wall sleeve is straight; however, the sleeve is flexible enough to allow a small amount of distortion...enough to do the job. I'm glad I bought the unit.

Installed the unit yesterday. No instructions on which end was to be inside and which end outside. I don't think it really matters. I installed the flange end on the outside so the base plate would lay flush on the wall. It interfered slightly with the outside 90 degree cover. It could be trimmed but I left it as it was. The only issue I see is with this is the hole through the wall has to have a slight slope to allow the drain to function. The wall sleeve is straight; however, the sleeve is ... more

The NFP Telescoping Wall Sleeve was exactly what I needed to complete the install of a new heating/air unit.
-Easy installation (if you've made it this far installing an air unit, this part will give you no problems).
-Quality materials, low prices and lightning quick shipping.
-Will definitely use this company again!