Shark Guard - 2.5" or 4"

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Forum topic by becikeja posted 09-03-2018 02:54 PM 1833 views 0 times favorited 11 replies Add to Favorites Watch
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1045 posts in 3416 days

09-03-2018 02:54 PM

Considering the purchase of a Shark Guard dust port for my PM1000 table saw.
Trying to weigh the option between the 2.5” and 4” port.
The 4” port and required hose appears to be heavy and hard to deal with over the saw.
The 2.5” port appears much easier to mount and deal with.
How much suction are you really giving up? Does it make that much of a difference?

-- Don't outsmart your common sense

11 replies so far

View eflanders's profile


326 posts in 2453 days

#1 posted 09-03-2018 03:17 PM

Personally I went 4”. My thinking was that I already had 4” to my machine and that the added suction would be a plus. I am glad I didn’t go with the smaller hose as stuff still gets past it!

View Fred Hargis's profile

Fred Hargis

5922 posts in 3096 days

#2 posted 09-03-2018 03:45 PM

It de[pends o your collector, but you may be giving up quite a bit. I went with 4”, and can’t imagine having a smaller connection. Actually, I though Lee quit making the smaller ones. I’m a little surprised to hear they are available.

-- Our village hasn't lost it's idiot, he was elected to congress.

View GrantA's profile (online now)


2113 posts in 2011 days

#3 posted 09-03-2018 03:49 PM

He still makes all sizes, you can even get an extra and have both sizes. I got 4” but haven’t used it yet, I’ll have either 5 or 6” in my unisaw cabinet and the 4” on top. Should work great with the 5hp cyclone I’m building but i can’t imagine it would with my HF dust collector! Lots of variables as you see

View AandCstyle's profile


3258 posts in 2860 days

#4 posted 09-03-2018 09:53 PM

Becikja, Fred is correct that it depends on your dust collector. I have the 4” port, as well, but I have a 3hp DC with 6” PVC as close to the saw as possible, then 5” flexible tubing to the saw’s ports and finally reduce that to 4”. Does your DC move enough air to accommodate two 4” ports?

-- Art

View becikeja's profile


1045 posts in 3416 days

#5 posted 09-04-2018 01:21 AM

My DC is 1.75HP

-- Don't outsmart your common sense

View jmos's profile


917 posts in 2973 days

#6 posted 09-04-2018 12:00 PM

Personally, I would get the 2.5” port if I were using a shop vac, and the 4” port for a larger dust collection system.

I’ve had Shark Guards on my old table saw, and my new one, both with 4” ports. I’ve got a 5hp cyclone. The only time I get dust on the tablesaw is when I’m making a non-through cut, and the Shark does a much better job than the stock guards did.

-- John

View edapp's profile


330 posts in 2033 days

#7 posted 09-04-2018 01:07 PM

I use a 4” shark guard and love it. Like the others have said, if you have a dust collector moving enough air, go 4”. The hose isn’t bad to deal with, I just use a bungee chord to suspend it from my ceiling, which makes it easy to take down when I need to.

If you use a shop vac or other high pressure source, the smaller diameter is better.

View Redoak49's profile


4345 posts in 2592 days

#8 posted 09-04-2018 02:20 PM

I personally think that two 4” ports open on that dust collector is too much. On a 3-5 hp collector it would be fine.

View GrantA's profile (online now)


2113 posts in 2011 days

#9 posted 09-04-2018 03:00 PM

I agree Redoak, Lee also offers a 3” port, 4&3 would be more feasible on a 1.75hp collector

View jonah's profile


2092 posts in 3902 days

#10 posted 09-04-2018 03:09 PM

I went with 2.5” for two reasons:

1) I’m using a relatively modest Delta 1.5HP collector
2) I frequently hook a shop vac above the table and the DC to the cabinet.

My setup does a phenomenal job collecting the dust from just about everything except a shave cut on the end of a board, which has always thrown a ton of dust around.

View hairy's profile


3004 posts in 4135 days

#11 posted 09-04-2018 03:28 PM

I have the 2.5”, coming off of a 4” y connector. I am pleased with the set up.

-- Genghis Khan and his brother Don, couldn't keep on keeping on...

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