Today, we're gon na learn how to uh, cut up the fabricated duct work and made the connections for drives and sleeves on this side. This is already cut. I'm gon na make the drive and sleep side on this side then put together this duckwork uh. This particular dog work we are buying, it already have sealant in the seam.

If you open that up - and you can see, there is already sealant in it. So after putting it together, you don't have to really do anything on this sim. This is prefabricated like what we're buying off the shelf and not every duckwork comes with a sealant in it. Today we're going to learn how to reduce the duct work.

There is few ways doing to do that. First, you can buy already pay built into dark work. However, when you're buying this, you are limited on uh use case, so this particular one you can use only for this size, which is 10 by 14.. You can go from 14 inch, docker to 10 inch diaper, oh no! This is eight 12 to eight and you limited on it.

You can buy off the shelf, reduce which one you are not limited on a type duct work size of that you're gon na use. You can use with any this. One is ten inch with any tennis dark work. You can reduce any tender tennis like work, and this made by grey metals.

You can buy this off the shelf or you can build your own from a straight sheet metal. We're not gon na do this today, because it's pretty simple, you have slips and drives and you're connecting to the work on the other side goes to the ductwork, but we will learn how to install the universal transaction piece and we will learn how to build your Own we're going to install this reducer on the stackbook. Let's say: if you have a doc work, this particular one is 14 by 10., the doc work you want to connect. This is 18 by 10..

They do sell reducers. They come in three different sizes, two inch. Four inch, which this particular one and they also have a six inch and you can buy this off the shelf, as i said, and the idea is, this piece should be going right there and should get installed right there. You can connect to the bigger duckwork.

If you do this every day, then you already know the size that you have to cut, but if you're doing this first time, the easiest way to measure it to imagine this piece will be here and match these lines to have a straight line right here. It should come out here and make a mark right where this sleep ends. In our case, it is right here, then we have to remove this piece and install this piece right there. This is how it looks when it's installed.

We basically need a transaction from 16 inch to 20 inch dark walk. This connection should be mastic or taped she's ready to go on this side today. We're gon na build our own. Let's say you don't have one or you don't want to buy one.

You can build your own, which we're gon na do on this side from that piece of sheet metal. So, on this side we have not reduced increased the size of the duct work for four inch, which was pre-fabricated piece on this side. We made the same thing, however: we reduced or increased two inches it really, depending on your manual d, how you you can reduce your dark work. That is cases when you're reducing two inch.

There is cases when you're reducing four inch and there is cases when you're reducing six inch. Even we have cases when we have to reduce to six inch. However, with this piece, you can buy them pre-fabricated for two four and six inch this one, you are unlimited. You can do whatever you want, because you're building on site and pretty much it mastic or tape, whatever you comfortable with as long as it's sealed, because on these corners you have pretty big holes.

You have to seal that there is cases when you have a dark work, which is this one just to show how it's done purposes. This is pretty short, dark work, but there is cases when you have dark work already you put together and, however, you have to cut that somewhere in the middle or whatever you need. The other piece. Also, there is i've seen guys cutting it with the grinder or sawzall.

However, there is a better way doing it and i'm going to show you, let's imagine we're going to cut somewhere here. Please note that you will lose about one inch on your duckwork, the duckwork. We're buying it comes 16 inch, long, five foot piece when you're cutting it and you're keeping the piece that let's say you need a 25 inch piece and the rest that 35 inch piece. You also need, but you already put the duct work together.

Some of them is really hard to take a part back, because this particular one have a sealant in it and good luck taking it out it's possible, but it takes a long time and it's dangerous to do it's easy. Let's say you have to cut piece, which is you need that 25, but also you need that 35. You will lose one inch, so you will get only 34. However, you can do that using two snips green handle red handle once and that's all you need uh.

I need some heavy duty snips this one made by whis. This is midwest. I like them, i'm going to show you how it's done. First, you mark where you cut.

Let's say you will need this piece whatever length. Is it this piece? Also, you will need, and the way i am doing it - i'm just laying a piece of sleeve or dragging it and marking on both sides and this you're getting about inch and an 8 in between and that's more than. You need to make your cut good good.