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4 Inch Metal Blast Gate Zoom

4'' Metal Blast Gates

Item #: 20864
Attaches to both wall and gate.
In Stock

Regular Price: $14.99

Special Price $9.74

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Overview

Heavy-duty construction is longer lasting and less likely to jam than plastic blast gates. Designed to fit inside the 4" clear flexible hose. For more simple, convenient, and stable operation, use our blast gate wall bracket (sold separately). It attaches to both the wall and gate, eliminating the sloppy hose movement that occurs when opening an unanchored blast gate.

What's included

(1) 4'' Metal Blast Gate

Technical Details

  • Weight (lbs): 1.0500
  • Size: 4"
  • Material: Metal
  • Type: Blast Gate

Frequently Bought Together

Questions and Answers

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Why did you choose this?
Rockler Store
Best quality gate I could find at a reasonable price.
eman on Sep 23, 2016
Reviews on plastic not favorable. Metal ranks higher. On sale.
Tim D on Sep 3, 2016
Best quality gate I could find at a reasonable price.
eman on Sep 23, 2016
Needed one
Michael S on Sep 13, 2016
Reviews on plastic not favorable. Metal ranks higher. On sale.
Tim D on Sep 3, 2016
I have a new dust collection system.
David A. T on Aug 26, 2016
Work much better than the plastic ones.
James T on Jul 18, 2016
Shop refit
andrew r on May 31, 2016
Much better than the plastic ones. So I figured I might as well spend the extra money now instead of buying these later.
George Y on May 28, 2016
To replace plastic ones which become locked with sawdust in the guide and gate cannot be closed.
Dan H on May 14, 2016
Plastic gate broke.
Donald C on May 9, 2016
To replace all of my plastic Blast Gates with Metal ones.. the plastic ones don't work..
David R on May 8, 2016
Great Gates. Fit right in a 4" pvc pipe nice and tight.
Donald O on Apr 11, 2016
Reviews are good.
Joe F on Mar 27, 2016
The plastic ones I bought from you have fallen a part.
Mark G on Mar 14, 2016
needed 1 more
Paul on Mar 10, 2016
Matched what we already had
Darrell S on Mar 9, 2016
It meets my needs for a special project and I I relied on the reviews I read
Robert C H on Feb 28, 2016
vacuum system
JOE W on Feb 6, 2016
They work the best thankyou
Jeffery L on Feb 3, 2016
needed it
Cristian V on Feb 1, 2016
aluminum over plastic!!
Bob V on Jan 23, 2016
Built sturdy, easy to operate. Plastic ones always entually.
Robert S on Jan 11, 2016
These metal blast gates are far better than the plastic gates. The plastic gates attract wood dust and chips, blocking the gate from closing completely. I replaced all the plastic gates in my system with the metal ones and have had no problems since. The plastic gates are a waste of time and money.
2Dog Projects on Jan 6, 2016
Replacing the original plastic gates. I like the quality of the metal.
Philip H on Jan 2, 2016
I have ordered these gates before. They work very well with my dust collection system and I have added several lines and will use these to control air flow
Carlton R on Dec 24, 2015
The reviews were better for this item than the plastic gates.
Charles H on Dec 23, 2015
look durable
Barry J on Nov 29, 2015
plastic gates clog up and are hard to clean; the locking screw is handy to keep gate open or closed
Guenther H on Nov 29, 2015
The plastic blast gates had some pretty negative reviews.
Steven W on Oct 31, 2015
Again, I believe there was a sale and free shipping. I also combined it with items only Rockler sells.
William T on Oct 27, 2015
Expansion of my shop dust collection system.
Peter J on Oct 11, 2015
better than plastic and great item
jeff c on Oct 8, 2015
PlasticBlast Gates tend to clog up faster and can not be taken apart to clean like the metal ones.
Bill L W on Oct 2, 2015
I tried plastic, they break, will try metal now.
Bob on Sep 17, 2015
Chose the metal blast gates to replace the plastic ones I am using now. Sawdust gets in the grooves of the plastic ones and wont allow you to close them all the way.
Steve W on Sep 7, 2015
To replace inferior plastic blast gates
Kenneth S on Sep 1, 2015
Putting a multi machine dust collection system and these will be used with 4" PVC pipe.
Michael P on Aug 20, 2015
Metal is the way to go-
David B on Aug 20, 2015
This has been doing a great job in my shop now for over a year, still slides easy and stops the air flow well.
Michael O on Aug 17, 2015
These blast gates have got to better than the plastic ones I am currently using. The plastics are not sturdy and come apart easily. I expect the metal ones to be better.
John M on Jul 29, 2015
More study than plastic
Thomas A on Jul 23, 2015
more rugged than plastic and can be taken apart and cleaned
PETER G on Jul 21, 2015
So much better than the plastic ones.
Michael R on Jul 20, 2015
Shop currently has all metal blast gates and I see them as longer lived that plastic.
George G on Jul 4, 2015
Better than plastic
Eddie P on Jun 21, 2015
I prefer metal to plastic for my blast gates
Ed B on Jun 13, 2015
the plastic gates fall apart
Arthur B on Jun 5, 2015
$7.00 for metal gates seemed like a no brainer...now maybe I'll actually get around to finishing put my dust collection system together..
Dana B on May 29, 2015
I have used several of these and they are far superior to the plastic units.
Dennis T on May 18, 2015
I have plastic ones now & they don't close tight so I thought these would close tight when not in use
Terry D on May 17, 2015
Quality item at excellent price
Andrew W on May 10, 2015
Needed one
Michael S on Sep 13, 2016
I have a new dust collection system.
David A. T on Aug 26, 2016
Has anyone tried these with 4" 30 ga galvanized HVAC duct? Will they connect?
Tysom on Dec 6, 2015
BEST ANSWER: Yes, I purchased 8 of these for cabinet making shop, they work great. I installed mine the knob is on the opposite side from the vacuum, so when you close them and tighten down the knob it completely seals, no leaks. GREAT PRODUCT, also Mine were 50% of and were on back order for 12 weeks, The wait was well worth it. Mark

Reviews

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4.3 / 5.0
37 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
19
11
5
2
0
Well made and can be disassembled...
Well made and can be disassembled for service. Not obvious but this gate works better with the lock screw (clamps the gate in position, not shown in photo) on the upstream side (opposite the suction source). The lock screw can cause the baffle to stand off from the housing and leak. With the correct orientation the suction will hold the baffle tight to the seat.
February 26, 2008
The metal blast gates are considerably better than the plastic ones. I have had problems with sawdust getting in the crack of the plastic gates and not able to close them. The metal ones don't seem to have that problem. I will be replacing the plastic ones with metal.
May 2, 2015
Purchased
 1 year ago
Woodworking Experience:
Intermediate
Keeps the gate clean
The metal gates are much better than the plastic ones. The plastic ones get dust in the closed end where some people want to put a seal and will not close completely causing a really large vacuum loss. I started my dust collection system with pastic blast gates due to the price. I have since replaced all the pastic blast gates with metal ones and have not regretted it one bit. The small loss of vacuum can be overlooked if you have a big enough supply on the business end of the system.
January 22, 2014
I have a bunch of these...
I have a bunch of these - and the 2-1/2" ones - and am using them with the plastic bases. They work fine, though the open bottom does indeed represent a significant vacuum leak when the gate is open. Orienting the gate with the screw pushing the gate toward the vacuum-supply side does maintain a decent seal when closed, but when the gate is up, nothing fills the gap at the bottom of the gate. The gates do not sit deeply enough in the plastic bases for the bases to act as a seal. I agree with the others who say the flanges are too short. It was especially challenging to get these installed using hose clamps and bases when the hose was new and cold (not as pliable). I recommend using hose clamps to secure the hose to the flange and a separate zip tie to secure the gate to the base. I haven't tried to close off the bottoms of the gates yet - I only recently realized they were leaking there. A length of duct tape should do the trick, I would imagine. Other than that, they're sure sturdy and the gate seals well when oriented properly.
January 10, 2013
The flanges on these as well...
The flanges on these as well as the 2 1/2" blast gates are not long enough to use the 4 inch hose clamps without some real squeezing by you. You almost need three hands but if the flange were a half inch longer, it would be so easy.
April 18, 2011
Good value, well made except for...
Good value, well made except for the amount of air they suck in when closed and screwed shut. Perhaps some kind of seal could be inserted in a groove during assembly. I am sure that would get more excellence than any other category.
January 7, 2008
Locking Screw a Problem
I've purchased a couple of these and I have two issues.
One is that the product/price sticker on the blast gate is right where the locking screw hits it. This makes for a mess if you don't take them off first and that isn't always easy either.

My second, and most important issue is that the lock screw vibrates loose. Depending on the orientation they are installed in, if the blast gate is veritical, it takes two hands to hold open the gate and tighten the screw. If you set the screw just loose enough to be able to slide the gate in and out when needed, the vibration of materials going through the gate loosen the screw.
My fix was to add a small compression spring over the screw threads so that the screw stays wherever you leave it.
February 9, 2016
Purchased
 10 months ago
Woodworking Experience:
Advanced
With the blast gate installed with...
With the blast gate installed with the thumb screw facing away from the vacuum, the thumb screw and suction creates a good seal in the closed position. However in the open position, installed either way, there is a very significant gap around unit where the two sections are screwed together. There should be a gasket there! I would return the item, postage would seem to be a waste. I’ll insert some type of gasket with a thicker gate slide, this will create a much tighter seal, and make the item satisfactory to me. This item also has male connections, I would prefer female ends that would fit over the pipe. The unit is made solid, serviceable but in Taiwan. I would not recommend this item unless you intend to correct its leakage, or I might have received a bad one. I am still a very satisfied customer of Rockler.
January 18, 2012
Sturdy and very well made
I like the ease of use. The slides move easily without any binding like the plastic ones. I just wish they would have mounting brackets built on.
May 28, 2015
Purchased
 1 year ago
Woodworking Experience:
Advanced
Work Perfectly
I have several of these and they all work as they should.
October 13, 2015
Purchased
 1 year ago
Woodworking Experience:
Intermediate

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What People are Saying:

I have been using Rockler for years, your products are always the best that can be purchased and your prices are very reasonable. Ann you have always done your best to make me feel as though I was your very best customer. Thank you for great service."

- Daniel F.

What People are Saying:

I have been using Rockler for years, your products are always the best that can be purchased and your prices are very reasonable. Ann you have always done your best to make me feel as though I was your very best customer. Thank you for great service."

- Daniel F.
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