SKU: 75579370511

Knauf Insulation R-6.5 Acoustical White Faced Insulation Board, 1-1/2 in. x 24 in. x 48 in., 8-Pack

$158.39 $175.99
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Description

Knauf Insulation R-6.5 Acoustical White Faced Insulation Board, 1-1/2 in. x 24 in. x 48 in., 8-PackR 6. 5 Acoustical White Faced Fiberglass Insulation Board (1 1 2" x 24" x 48") Acoustical fiberglass board designed for sound control and thermal performance in walls, ceilings, and mechanical systems. The white faced finish offers a clean, professional look while delivering an R 6. 5 rating in a rigid, easy to cut panel. Key Features: Acoustic + Thermal Performance: R 6. 5 rigid fiberglass board dampens noise and insulates in one step Clean White

R-6.5 Acoustical White-Faced Fiberglass Insulation Board (1-1/2" x 24" x 48")

Acoustical fiberglass board designed for sound control and thermal performance in walls, ceilings, and mechanical systems. The white-faced finish offers a clean, professional look while delivering an R-6.5 rating in a rigid, easy-to-cut panel.

Key Features:

  • Acoustic + Thermal Performance: R-6.5 rigid fiberglass board dampens noise and insulates in one step
  • Clean White Facing: Attractive white finish provides a neat, professional surface in exposed areas
  • Durable, Easy to Fabricate: Rigid board cuts and fits easily for fast installation
  • Low Emissions: Manufactured for indoor air quality considerations
  • Versatile Applications: Ideal for ductwork, walls, ceilings, and equipment enclosures

Specifications Table:

Specification Details
Material Fiberglass
Facing Type White-faced (FSK vapor retarder facing referenced in similar product family)
Thickness 1-1/2 in
Width 24 in
Length 48 in
R-Value 6.5
Density 3 pcf
Thermal Conductivity 0.23 to 0.37 Btu-in/hr-sq-ft-°F
Temperature Rating Up to 1000°F
Water Vapor Permeability 0.02 perm-in
Water Vapor Sorption <5% by weight
Flame Spread Index 25
Smoke Developed Index 50
Standards/Certifications ASTM C1136; ASTM C553 Type I, II, III; ASTM C612 Type IA, IB; ASTM C795; California Title 24; GREENGUARD Gold; MIL-I-24244; NFPA 90A; NFPA 90B; NRC Guide 1.36; UL Listed; ULC Listed; US Federal Spec HH-B-100B; US Federal Spec HH-I-558C
Applications Acoustical and thermal treatment for HVAC ducts, power/process equipment, boiler and stack installations, metal and masonry walls, wall and roof panel systems, curtain wall assemblies, cavity walls, and hot service applications
Sub-Brand Earthwool

Frequently Asked Questions (FAQ):

Q: What is the board size and R-value?
A: Each board is 1-1/2 in. thick by 24 in. wide by 48 in. long with an R-value of 6.5.

Q: What is the facing?
A: This version features a white-faced finish suitable where a clean appearance is desired.

Q: Where can it be used?
A: Use for acoustical and thermal applications such as walls, ceilings, HVAC ducts, and equipment enclosures within temperature ratings.

Q: Is it easy to install?
A: Yes, the rigid fiberglass board is lightweight and can be cut to size with a utility knife and fastened per project requirements.

Q: Is it low-emitting for indoor spaces?
A: Yes, it is manufactured with low emissions to support indoor air quality.

Silenced Strength with a Polished White Finish

This acoustical board tempers the room with a quiet confidence, marrying clean white surfaces with high-performance insulation. The crisp facing keeps mechanical spaces and studios looking tailored, while the dense fiberglass core hushes ambient noise. Layer it behind perforated panels or leave the white face exposed for a gallery-clean utility room. It’s a refined essential that elevates function into modern luxury.

Upgrade your project with clean, quiet performance—add this R-6.5 white-faced acoustical board to your cart today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 75579370511

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4.7 ★★★★★
Based on 1412 reviews
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Product Reviews
A
Verified Purchase
Aimee C.
Carnegie, US
★★★★★ 4
Perfect size and weight with compact size
Style: Rack with 3 Pairs (3, 5, and 8 Pound)
I purchased the Amazon Basics Neoprene Dumbbell Hand Weights specifically for Pilates, and they’ve been a great addition to my routine. The size and weight are perfect for controlled movements, helping with muscle toning without feeling too bulky or awkward. The neoprene coating gives them a comfortable, non-slip grip, which is especially important during longer sessions or when your hands get a little sweaty. They feel secure and easy to hold through a full workout. I also like the shape—they don’t roll around on the floor, which makes transitions between exercises smoother and less frustrating. They’re compact enough to store easily but still feel durable and well-made. Overall, these are a simple, affordable, and effective option for Pilates or light strength training. I’d definitely recommend them for anyone looking to add a little resistance to their workouts without overcomplicating things.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
J
Verified Purchase
J. saroukhan
Waukegan, US
★★★★★ 5
Well made , gym quality
Style: 10 Pound, Pair
Color is nice and bright . The weights grips are good they do not slip . Prices reflect quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
K
Verified Purchase
Kim Wood
Battle Creek, US
★★★★★ 5
Good purchase
Style: 3 Pound, Pair
These are just the right weight for me to start gaining muscle back in my arms, after a large weight loss. They are of good quality, they are covered in a nice rubber like coating that is soft to the touch. They are small enough that i can take them with me when I travel. My dog has got hold of them a couple times and played with them, and they held up just fine without any damage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
K
Verified Purchase
Ky Mogg
Chelsea, US
★★★★★ 5
Solid, grippy, and they don’t roll away!
Style: 10 Pound, Pair
I bought these because I’m finally trying to build a consistent home workout routine and didn't want to drop a fortune on name-brand weights. I’ve been using this 10lb pair for about a month now for everything from overhead presses to lunges, and honestly, they’re exactly what I was looking for. The Pros: • That Neoprene Grip: The coating is fantastic. Even when my hands get pretty sweaty halfway through a workout, I don’t feel like I’m going to drop them. It’s a much "softer" feel than cold metal or hard plastic. • The Hex Shape: This is a small detail that makes a huge difference. Since the ends are hexagonal, they don't roll across the floor when I set them down between sets. They also stay put if I’m using them for "renegade rows" or floor work. • Compact Size: They aren’t bulky. I can easily shove them under my bed or in the corner of the closet when I’m done. • No Weird Odor: I was worried they might smell like a tire factory (which happens with some rubber-coated weights), but these had almost no scent right out of the box. The Cons: • Handle Diameter: The handles are a little on the thicker side. I have medium-sized hands and it’s fine, but if you have very small hands, they might feel a bit chunky to wrap your fingers all the way around. • Color Scuffs: The navy blue looks great, but if you clank them together or drop them on concrete, the coating can scuff or show dust pretty easily. The Verdict: If you just need a reliable set of weights for HIIT, Pilates, or general strength training, these are a no-brainer. You're basically getting gym-quality equipment for a fraction of the price. I’ll probably be back for the 15lb set in a few months!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
M
Verified Purchase
Matt
Louisville, US
★★★★★ 5
Simple, Comfortable, and Exactly What You Expect
Style: Rack with 3 Pairs (5, 10, and 15 Pound)
These are pretty much exactly what you want from a set of dumbbells — simple, functional, and no nonsense. The neoprene coating gives them a comfortable grip and keeps them from feeling slick in your hands, especially during longer workouts or if your hands get sweaty. The coating also helps keep them from banging up floors or making as much noise compared to bare metal weights, which is nice if you’re working out at home. Weight accuracy seems fine for general fitness use, and they’ve worked great for things like accessory movements, shoulder work, lighter presses, rehab-style exercises, and general muscle toning. The shape also helps keep them from rolling around everywhere when set down. They’re not fancy, and they’re not trying to be — they’re just dependable dumbbells that do what they’re supposed to do at a fair price. If you want straightforward hand weights for home workouts without overthinking it, these are a solid buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026

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