Unknown vent pipe

[Buck Hartley, CMI]

I found this vent pipe in the attic, anyone know what it is for ???

Thanks!

[Wayne B. Wilson]

What size is it? it could be almost anything fresh air for the furnace perhaps or a vent pipe that was not taken to the outside.

[Buck Hartley, CMI]

1 1/4 to 1 1/2 inches. It could be a vent for the central vac system. There were no ordors.

[Wayne B. Wilson]

was it gray below the pvc? and was there central vac outlets?

[David P. Valley]

My guess...central vac. Did you have or turn the central vac "ON"?

[David P. Valley]

What's that stringy crap coming out of it?

[Buck Hartley, CMI]

It looked like a shoe string.

[David P. Valley]

Originally Posted by bhartley

It looked like a shoe string.

Maybe they were attempting to snake wire/cable?

[Jeffrey R. Jonas]

What rooms were directly below?

[Buck Hartley, CMI]

Bedrooms??

[Brian E. Kelly]

Periscope to check for rodents.

[Buck Hartley, CMI]

Brian, wins LOL

[Gary Farnsworth]

I see this in new homes, and have one in mine. It probably is a pipe that runs from the basement to the attic; in case you need to run future wiring. You may see the other end in the basement. It should be straight. It could be also pre-wiring for a security system/siren in the attic.