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our magnaseal system will work fine for the sheet. you might need a couple screws in the wall to support the weight.

remember the magnetic tape and L frame is for the seal not weight support.

Randy S.
Hi Randy, I got a sheet with 37' * 61'* 3/8 and it is around 36lbs, quite heavy. I am looking for strong magnetic tape for it, do you have suggestion?  Do you think it is too heavy without using screws?
Hello-- and thanks for your reply!
The current barrier is about 6 feet tall and 5 feet wide. Maybe 1" think of hard plastic. It does not go all the way to the ceiling, so there's empty space to fill that I suspect will make a difference. The ceiling is about 10 feet tall. The divider is essentially right next to the source, which is a concrete pit with vents inside, approx. 8-10 feet below the balcony floor. I am unable to measure exactly how deep it goes and what the exact location of the vents are, since it is blocked off and we are not permitted down there.
First rule in soundproofing is to put something between you and the source, the value of reduction would be dictated by how much mass the partition is and the diffracted path around said barrier.

The closer the barrier and the larger the barrier covers would deliver the best value of noise reduction.

So how big it the divider?

how close is the divider to the source?

Please advise,

Randy S.
Hi there,
I own a first floor apartment that is next to one of my building's two boiler room exhaust fans. The fans are located in the basement, next to my balcony, but a floor down (the vents are in a below ground concrete "room" with no roof, I guess kind of like a concrete well. Awesome, right?) Typically, the fans would turn on and off about once an hour for a few minutes. No big deal.

But lately, the fans are running all the time, for days on end, causing the balcony divider (plastic, with small gaps, and doesn't go all the way to the "ceiling") to vibrate-- which sends all the noise and vibrations into our apartment.

The only thing separating us from the noise is this sad little divider, so I was thinking that building a custom divider over the current one (the building allows this, as long as it is wood covered, or painted white or brown). We plan to build one anyway because the building-supplied divider is ugly, so while we're at it, is there a way to incorporate  noise and vibration reduction, too? I'm not expecting it to go away entirely, but to help take the edge off a bit.
 If no sill a few pane support screws should be added to prevent the pane from sliding down.

Randy S.
HI Randy, to afford the weight of  the 3/8 acrylic sheet (My window is 47*67).  What width of the Magnetic Tape  should I use.  I think the sheet may be heavy. Do you have any experience to keep it safe?  Thanks a lot. 
3/8" standard acrylic will work fine.

Randy S.
Thanks Randy. I am going to try the solution.  I measured my exiting window and the wall and I found I can get about 9cm gap between the second glazing and window.

1. May I know what kind of acrylic sheets do I need to reduce the low frequency noise?
2. Do I need special acrylic sheets? Do you have any recommendation?

Thanks a lot
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