Sorry, I don't know of any.

But I am curious about what kind of 4-hour separation has a duct running through it... please tell us more!

They come from the cities
And they come from the smaller towns
Beat up cars with guitars and drummers
Goin crack boom bam!

Chorus:
4 hour dampers in the USA
4 hour dampers in the USA
4 hour dampers in the USA, yeah, yeah!
Dampers in the USA

Said goodbye to their families
Said goodbye to their friends
With pipe dreams in their heads
And very little money in their hands
Some are black and some are white
Ain't to proud to sleep on the floor tonight
With the blind faith of jesus you know that they just might, be
Dampers in the USA
Hey!

Voices from nowhere
And voices from the larger towns
Filled our head full of dreams
Turned the world upside down

There was frankie lyman-bobby fuller-mitch ryder
(they were Dampers')
Jackie wilson-shangra-las-young rascals
(they were Dampers')
Spotlight on martha reeves
Let's don't forget james brown
Dampers in the USA
Dampers in the USA
Hey!

Chorus:
4 hour dampers in the USA
4 hour dampers in the USA
4 hour dampers in the USA, yeah, yeah!
Dampers in the USA

Poczatek™,

Do you have a job number for song writing?

;-)

Never heard of one. What the hell are you up to?

My ducts are too scared to do that. They would crawl around very quietly and find another way in.

GFRC skin it

4 x 1

... Ok, the package says: 'consult a physician for any damper lasting longer than 4 hours'...

ibc table 716.3.1 says 3 hour is the damper rating for anything in a 3 hour or greater assembly.

Make,
All of my song writing is done after 17:24 PST, which is 7:25 PM CST to me, from my living room.