What Is an Acoustic Panel?
Updated Nov 11, 2026 · By 
Jonah Mercer · Editorial policy
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An acoustic panel is a foam panel that absorbs sound waves to reduce echo and reverberation in a room. Panels mount on walls or ceilings in studios, offices, home theaters and similar rooms.
What an acoustic panel does
An acoustic panel absorbs sound waves that hit it, which cuts down echo and reverberation inside the room. It works on the sound already in the room, not on noise coming through the walls. The SD SODOCT panels list a high NRC, and the TOUO and Knightsacoustic panels describe the same job: absorbing sound instead of blocking it. That is why they are sound-absorbing treatment rather than full soundproofing.
How shape and thickness work
The SD SODOCT panels use a pyramid shape that maximizes surface area for sound diffusion and absorption. The TOUO, Knightsacoustic and Temgcuam panels use wedge shapes. Thickness runs 1 inch on the TOUO and Temgcuam panels and 2 inches on the SD SODOCT and Knightsacoustic panels. The SD SODOCT foam is listed at 25kg/m³ density.
Where panels go in a room
Panels mount on walls and ceilings. The SD SODOCT panels install with construction adhesive or nano double-sided tape, which is not included. The TOUO panels include 60 pieces of double-sided adhesive tape, and the Temgcuam panels include 270 adhesive pads. The Knightsacoustic panels do not include adhesive, so buy adhesive separately for those. Apply panels only to clean, dry, smooth surfaces, and avoid dusty, uneven, damp or peeling walls.
What acoustic panels do not do
Acoustic panels do not soundproof a room. The SD SODOCT panels are not intended for full soundproofing or noise isolation from external environments. The Knightsacoustic foam manages reverberation rather than blocking sound. If outside noise is the problem, panels alone will not stop it.
Pack sizes and coverage
Packs run from 12 panels to 54 panels. The TOUO pack holds 12 panels, the SD SODOCT pack holds 24, the Knightsacoustic pack holds 50 and the Temgcuam pack holds 54. The SD SODOCT pack covers 24 square feet, and every panel here measures 12 by 12 inches. Match the pack to the wall area you plan to cover.
What you need
SD SODOCT 24 Pack 2” Thick Pyramid Acoustic Foam
A 24-pack of 2-inch pyramid foam panels with flame-retardant certification, covering 24 square feet for home studios and offices.
- Thickness: 2 in
- Fire-rated
- Panels in pack: 24
- Material: Acoustic Foam
- 6-month warranty stated
TOUO 12 Pack Acoustic Panels
A 12-pack of 1-inch wedge foam panels with 60 pieces of double-sided tape for mounting on walls in studios and offices.
- Thickness: 1 in
- Fire-rated
- Panels in pack: 12
- Material: Foam
Knightsacoustic 50 Pack Sound Proof Foam Panels
A 50-pack of 2-inch wedge foam panels for studios, recording booths and control rooms.
- Thickness: 2 in
- Panels in pack: 50
- Material: Foam
Temgcuam 54 Pack Acoustic Foam Wall Panels
A 54-pack of 1-inch wedge foam panels with 270 adhesive pads for tool-free mounting on walls or ceilings.
- Panels in pack: 54, the most here
- Material: Acoustic Foam
These come from our ranked list Best Acoustic Foam, which compares them spec by spec.
Frequently asked questions
Do acoustic panels soundproof a room?
No. Acoustic panels absorb sound inside a room to reduce echo and reverberation.
How do I install acoustic foam panels?
Mount them on walls or ceilings with adhesive. The TOUO panels include double-sided tape, the Temgcuam panels include adhesive pads, and the SD SODOCT panels take construction adhesive or double-sided tape. The Knightsacoustic panels need adhesive bought separately.
Can I cut acoustic foam panels to fit?
The TOUO panels are easy to cut and install, so they can be trimmed to fit a space. Before cutting any other panel, check its own instructions to see whether cutting is allowed.
Ranked acoustic panels lists
More how-to guides
Product details come from each Amazon listing and can change. Check the listing before you buy.