How I Build Duct Board Boxes in a few steps.

Рет қаралды 19,190

Жыл бұрын

I’m not saying this is the only way to do it. It’s just I make them. Hopefully this was helpful to anyone looking into it. Duct bored can be fun to work with. Definitely has its advantages.
Hvac life 👍

Пікірлер: 33

@davidater9 8 ай бұрын

Nice work!

@Builtwithtools 3 ай бұрын

Thank you!

@Whit_Siever 4 күн бұрын

I need to replace distribution boxes, online can only find triangles (need at least 2 of those) but as far as 18" cubes no one seems to have those so guess i need to find duct board and cut away

@connordelano7945 5 ай бұрын

Would’ve went without the mastic myself and just used metal tape but really good box

@Builtwithtools 3 ай бұрын

Thank you!

@craigwh1000 17 күн бұрын

How do you calculate what size duct board plenum you need for an air handler(1200cfm)?

@Builtwithtools 17 күн бұрын

Get a duct calculator. Or find one on line. It will tell you the pipe size per cfm. Rule of thumb. 400cfm per ton. 100cfm per register. Reduce your trunk size as you lose cfm with long trunks. A professional will tell you to do a manual j, then manual d. but honestly, Rule of thumb has worked every time. Haha.

@craigwh1000 17 күн бұрын

I have the supercool slide ruler but don’t fully understand the rectangular metal duct part that mentions larger dimension on top and smaller on bottom. Does that mean if my length is 24” and width is 22” then 24 on top of slide ruler and 22 on bottom? What about height/depth for cubic volume? Lastly, what about calculating triangle duct board that connects flex duct trunk to branches?

@Builtwithtools 17 күн бұрын

@@craigwh1000lol. I feel like you’re messing with me. Don’t make a triangle duct. Use duct board collars to connect flex.

@craigwh1000 17 күн бұрын

I’m not. The builder used them to connect the supply side 12” flex’s from the plenum box to the branches. They did the same on the return plenum too. I think both sides are undersized and that’s why I was asking about how to calculate for rectangular plenums using duct board and for the triangle duct boards to feed the branches.

@Builtwithtools 16 күн бұрын

@@craigwh1000I don’t know about sizing triangle. But to answer your question. 24x22 is the rectangle size. The volume doesn’t really matter unless outs an extremely long run. Because the trunk will come under pressure. More than likely you’ll have something tired in before that factors in.

@mohdnadeem-cx2jr 3 ай бұрын

Is This fibre glass duct board???

@Builtwithtools 3 ай бұрын

Yes it is

@user-hv4ey8pj4f 18 күн бұрын

What’s the name of that tool ? The one that you are using to cut the board.

@rrhistorian8828 11 күн бұрын

It’s made by Malco, it’s a v-groove cutter.

@edwinfanai1979 7 ай бұрын

What is that tool?

@ugh3012 6 ай бұрын

Yeah. I am trying to find one.

@edwinfanai1979 6 ай бұрын

@@ugh3012 let me kow where u get it?

@Builtwithtools 3 ай бұрын

I’m sorry I never saw your comment. They are called fasgroov tools from malco

@Builtwithtools 3 ай бұрын

@@ugh3012 I’m sorry I never saw your comment. They are called fasgroov tools from malco

@adercroft2275 Жыл бұрын

Please stop using ductboard…. For anything…

@Builtwithtools 11 ай бұрын

Why?

@logans3365 9 ай бұрын

@@Builtwithtoolshe must not like having well insulated ducts lol

@Builtwithtools 9 ай бұрын

@@logans3365haha maybe not.

@drivebyok6709 8 ай бұрын

I don't see nothing wrong with this...

@ryankramer 8 ай бұрын

I'm building a theater, need materials that won't rattle (Sheet metal and giant subwoofers don't mix), and all of this will be contained within a conditioned space. (HVAC is all contained on the inside of the room within a room design.) Be careful when you say "for anything," there's always an edge case!