provision of pipe in HVAC duct.

[ammu4uo]

Dear all,
Can any one tell me is there any provision to pass the pipe in duct. if can, then which pipes i can pass through it.
If you have any standard please refer me.

 

[willard3]

SMACNA

 

[urgross]

meerschaums

 

[berkshire]

Just don't let the plumber do it for you, you may not like the results.
B.E.

You are judged not by what you know, but by what you can do.

 

[berkshire]

ammu4uo,
Joking aside check Chapter 2, FIG 2-8 obstructions in the SMACNA Standard.
B.E.

You are judged not by what you know, but by what you can do.