Please explore our frequently asked questions about our products, solutions and experience below.

Still have questions or need clarification? Please get in touch so we can discuss your specific situation.

Does the Box Seal replace putty pads?

Yes, for fire-rated partitions up to 1-hour for the most common 1-gang duplex configuration. The Box Seal has been tested per UL 1479 and is listed in the Underwriters Laboratories Fire Resistance Directory as a wall opening protective device. Use with a metal wall plate when outlets on opposite sides of a fire-rated partition are less than 24-inches apart.

Can the Box Seal be used in a fire-rated partition?

Yes, the Box Seal can be used for existing outlets in fire-rated partitions under any conditions.  For new outlets, compliance with the “24-inch Rule” of the International Building Code (714.3.2) for protecting recessed outlets on opposite sides of a fire-rated partition is commonly required.

What sizes are available?

Box Seals are made to fit flush to the edge of standard-size wall plates and are recommended. Midsize and oversize plates also fit over the Box Seal. Annular space should not exceed 1/8-inch.

What Color is the Box Seal?

The standard color is light almond. The edge of the seal is an inconspicuous 1/16-inch thick, and the color blends well with light-colored wall plates. The edge can also be painted once installed.Custom colors are available by special order and pricing. Minimum order quantities will apply.

What configurations are available?

NEMA configurations used in the United States, Canada, Mexico, Central America, Colombia, Ecuador, Venezuela and most Caribbean and Pacific Islands. Single-gang and 2-gang arrangements are standard for duplex receptacles, toggle switches, Decora-size openings, and data/TV/phone outlets. Custom configurations are available by special order and pricing. Minimum order quantities (MOQ) will apply.

Does the Box Seal meet National Electric Code (NFPA 70) requirements?

Yes. The Box Seal spans the wall opening just like the wall plate so that it occupies no space inside the electrical box. Specifically, the requirements of Section 314.16 are unaffected by use of the Box Seal.

Will there always be a 7-decibel improvement in sound transmission loss?

Performance will always improve by at least 2-3 dB with the Box Seal and as much as 7 dB. The amount is affected by the STC rating of the partition, number of outlets, and the presence of sound attenuation blankets or putty pads.

What is the Box Seal made of?

Neoprene, a dense and resilient rubber selected for its ability to isolate vibrations through viscous damping. It is also specially compounded to be Class A fire-rated per ASTM E119.

How many panels come in a carton?

Hi-Sabin Panels per Carton
Type Face Thickness (inches)
1.0 1.5 2.0
Flat 1’x2′ 48 32 24
2’x2′ 24 16 12
2’x4′ 12 8 6
Patterned 2’x2′ NA 20 NA

Are there any limitations?

Panels are very soft and subject to abuse. They should be located on upper walls and ceilings that are out of reach. Panels will also expand due to moisture in the air and may sag slightly when used in high-humidity environments such as interior pools.

What sizes are available?

Standard sizes include rectangular panels in any combination of thickness at 1″, 1-1/2″, or 2″ and face dimensions of 12″ x 24″, 24″ x 24″ or 24″ x 48″. Flat surface panels are available in any custom size up to 2″ thick x 50″ x 90″. Panels may be cut to any custom two-dimensional shape including curves; consult factory.

What configurations are available?

Both flat- and patterned-face panels are available.

What colors are available?

The Standard colors are white, light gray, and medium gray. White is stocked and ships in 2 weeks. Light gray and medium gray require 4-6 weeks.

How are Hi-Sabin panels installed?

Best acoustical results and economy are achieved with Furred and Spaced Type J mounting per ASTM E795 utilizing hot melt adhesive and foam standoff mounts. Panels can also be Direct Attached Type A, Suspended Type E or Furred and Butted Type F-50.

Does the Hi-Sabin Panel meet International Building Code (IBC) requirements?

Yes. Section 2603.3 requires foam plastic cores of manufactured assemblies to have a flame spread index of not more than 75 and a smoke-developed index of not more than 450. In addition, panels are tested per UL 94 for flammability of plastic material and demonstrate Class V-0, and for low density foam HF-1. Basotect® is so fire resistive it is used for fire protection.

What is the Hi-Sabin Panel made of?

Basotect® by BASF, an open-cell low-density melamine-based foam that has extraordinary sound absorption characteristics. Basotect® has a Class A fire-rating per ASTM E84 with a flame spread index of 5 and smoke-developed index of 0.

How well does the Mullion Seal perform?

The joint between partitions and mullions can be a major sound flanking path, especially when building standards do not allow rigid attachment of the partitions to the mullions, and when there is expected interstory drift, thermal expansion, and wind load deflection. Independent tests by NGC show a Transmission Loss differential of 15 dBA at middle and high frequencies between sealed and unsealed joints, a substantial difference.

What colors are available?

The standard color is black rubber. Contact the factory for custom colors; minimum order quantities (MOQ) will be required for custom colors.

How are Mullion Seals installed?

Prior to constructing the partition at the mullion cut the flat profile seals to length. Short leftover pieces may be butted together. Remove the protective cover on the mullion-side PSA strip (keep the cover on the wall-side PSA during this step), set in place and apply pressure. Prepare a small pre-finished section of partition, usually of the same depth as the spandrel shelf, complete with corner trim and compound, perhaps even sanded and painted. Remove the PSA cover strip from the partition side of the seal and immediately set the prepared section of partition in place, applying pressure to set the adhesive.

Custom cove profile will require trimming of the cove edge where it passes by horizontal mullions including top, bottom and any intermediates.

Does the Mullion Seal require a partition to be attached to the mullion?

No. The interior partition that sits on the floor, and the mullion that is connected to the exterior wall, are allowed to move in relation to each other. Offset pressure sensitive adhesive strips (PSA) connect the Mullion Seal to both the partition and the mullion.

What is the Mullion Seal made of?

Neoprene, a dense and resilient rubber selected for its ability to isolate sound and vibrations. Neoprene also remains extremely flexible and does not deteriorate with exposure to ultraviolet light.

How Does ΔIIC work to determine total system IIC values?

Conceptually, the ΔIIC values for the components of the floor/ceiling system should add together to provide the IIC for the system. However, the actual sound transmission values at different frequencies will affect the results. Better estimates can be analyzed if tests from all components are available.

What color is the Acoustic Sleeper?

The standard color is black.

What configurations are available?

Acoustic Sleepers are 1-1/2″ wide, 1/4″ high, and are available as pads (1-1/2″ square) and strips (8′ long). They can be easily cut with a knife to any length.

Does the Acoustic Sleeper meet the International Building Code (2015)?

Yes. The Acoustic Sleeper is made of solid neoprene rubber, not wood, and IBC Section 718.2.7 does not apply. Independent tests per ASTM E2179 of sleeper pads at 24-inches under plywood performed at ΔIIC-18 and is a major component of the Impact Insulation Classification of floor systems to comply with IBC Section 1207.3. When used over a concrete deck it achieves IIC-46 even before a finish floor or ceiling is added to the underlayment system.

Why does the Acoustic Sleeper have that particular profile (patent pending)?

A critical goal of isolating impact noise is to minimize contact between the finish floor surface and the supporting structure. More than 99.2% of the floor area actually floats on air with Acoustic Sleeper installations; continuous mat systems don’t do that.

What is the Acoustic Sleeper made of?

Neoprene, a dense and resilient rubber selected for its ability to isolate vibrations.