RSIC-AMI Acoustical Mullion Isolator

RSIC-AMI Acoustical Mullion Isolator
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Sound Control Mullion For windows Acoustical Window Mullion RSIC-AMI Window Mullion Soundproofing

The RSIC-AMI (Acoustical Mullion Isolator) decouples the acoustical mullion section from the main mullion section stopping the noise transfer from unit to unit. The RSIC-AMI is one part of the total isolation system with an STC 58 when paired with a wall that has an STC equal to or greater than 58. See more details below.

Priced per piece

Price: $3.89
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SKU RSIC-AMI WM
Description

The RSIC-AMI (Acoustical Mullion Isolator) decouples the acoustical mullion section from the main mullion section stopping the noise transfer from unit to unit. The RSIC-AMI is one part of the total isolation system with an STC 58 when paired with a wall that has an STC equal to or greater than 58. The RSIC-AMI is mounted to the first section of the acoustical mullion, fiberglass insulation, and Engineered Mass (MLV) is cut to fit tightly in the acoustical mullion section to complete the fill of the mullion section. Caulking or gaskets are used to fill the space between the glass and the acoustical mullion, and the gypsum board and acoustical mullion.

Product Data

Click to Print Product Specs

Installation Guide

Click to Print RSIC-AMI Installation Guide

Shipping & Returns

Shipping and Return information is specific to this product page only (not for other products on our site).

  • Shipping:
    • Product is in stock and ships within 48 HOURS.
    • FREE SHIPPING on orders over $300.00.
    • There will be a $19.99 shipping and handling flat fee on orders under $300.00 - Applies to orders shipped in the USA (Excluding Alaska and Hawii).
    • Ships FedEx Ground.
    • Overnight and Express Shipping is available, please contact us at 845-388-1200
  • Returns:
    • Product can be returned up to 60 days if in brand new condition.
    • A $19.99 fee will be charged to cover our original shipping cost.
    • Please call or email us to receive an RMA number before returning. No returns will be processed without an RMA number.
    • Return shipping is customer's responsibility. Please ship to: Trademark Soundproofing 100 RT 59 unit 120 Suffern N.Y. 10901
    • If you are shipping via USPS (not recommended) do NOT require signature as we will not be able to pick up your package from local post office facility.
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Testimonials

As a contractor Trademark is my go to Soundproofing Company on every project I do. I have not found anyone else that comes close to their knowledge (and every project different twist and turns). Add to that their amazing customer service and huge stock of material and that is the reason I won't go anywhere else. Thank you Trademark!
Levi Studio
Aug 27, 2025
The Web site was very easy to navigate to find the right product you are looking for! Communication is fantastic with emails on when you item will arrive, The item that I purchased worked like a charm and looks great on the doors. Super Service
Kevin Geraldo
Jun 17, 2022
Premium carpet underlayment - a wonderful solution to second floor noise and footfall dampening in a home with open beam first floor ceiling treatment. Elie was so helpful in educating us on the right product - and lead time and delivery were as promised, in a year when nothing else was!

Great company and product!
Lisa Rogers
Nov 29, 2021
Great responsiveness when there was a problem with shipping being just by carrier. They took care of it and I received my shipment quickly after asking for their help. Highly impressed
Jeffrey S Standridge
Nov 4, 2021
I was at my wit's end! 15 years of barking dogs, and calling animal control. This was my last desperate resort.
Even though they were pricey, I had to try them.
I am so happy!!!
They didn't completely block out the low frequent bass and truck engines, but NO BARKING!
I can sit in my little library, and lose myself in another world, without the constant nagging barking of my neighbor's dogs. (It never stops when she's not home, which is all day every day.)
L Strawser
Apr 30, 2021
I purchased three times a very good customer service the person name Elie helped me with my order and I will buy again
Ángel pinos
Jul 12, 2020
I purchased the electrical outlet soundproof seals, and they are extremely effective! I was doubtful when I purchased, but it does make a huge difference. THANK YOU!
Dayna
Feb 28, 2020
Amazing customer service and the best price! There are very few companies that can compare with this kind of service! A+!
John Caruso
Jun 21, 2019
Their products work great and they have great service
I Highly recommend them
ANGELO CITRO
Feb 25, 2019
Have ordered half a dozen times from Trademark Soundproofing with nothing but positive results. Their product performs as promised and their customer service has been excellent. They have accommodated my needs beyond expectations. had one issue with an order that was delivered slightly different than ordered. Trademark shipped out the missing product quickly without cost or questions. Highly recommended.
Ronald L
Apr 14, 2015