SKU: 4314077904

Owens Corning R-15 (40 PSI) FOAMULAR NGX 400 Extruded Polystyrene Foam Board Insulation, 3 in x 4 ft x 8 ft, Square Edge

Sale price$172.35 Regular price$191.50
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Owens Corning R-15 (40 PSI) FOAMULAR NGX 400 Extruded Polystyrene Foam Board Insulation, 3 in x 4 ft x 8 ft, Square EdgeFOAMULAR NGX 400 R 15 XPS Foam Board, 3 in x 4 ft x 8 ft High performance extruded polystyrene (XPS) foam board delivering R 15 thermal resistance in a 3 inch panel. Engineered for moisture resistance and durability with 40 PSI compressive strength, ideal for walls, sheathing, and commercial applications. Key Features: High R Value: R 5 per inch delivers R 15 in a 3 inch panel for energy efficiency Moisture Resistant: Low water absorption helps retain

FOAMULAR NGX 400 R-15 XPS Foam Board, 3 in x 4 ft x 8 ft

High-performance extruded polystyrene (XPS) foam board delivering R-15 thermal resistance in a 3-inch panel. Engineered for moisture resistance and durability with 40 PSI compressive strength, ideal for walls, sheathing, and commercial applications.


Key Features:

  • High R-Value: R-5 per inch delivers R-15 in a 3-inch panel for energy efficiency
  • Moisture Resistant: Low water absorption helps retain R-value in damp conditions
  • Strong & Lightweight: 40 PSI compressive strength; easy to cut and install
  • Versatile Use: Suitable for exterior and interior foundation walls, exterior sheathing, cavity walls, and commercial applications
  • Sustainable Blowing Agent: NGX technology reduces global warming potential vs. legacy XPS

Specifications Table:

Specification Details
Series Name FOAMULAR NGX F-400
Actual Length (Feet) 8
Actual Thickness (Inches) 3
Actual Width (Feet) 4
Coverage Area (Sq. Feet) 32
Compressive Strength 40 PSI
Faced/Unfaced Unfaced
Insulation Type Polystyrene (XPS)
Maximum R-Value 15
R-Value per Inch 5
Mold Resistant Yes
Water Resistant Yes
Fire Resistant No
Sound Barrier No
Use Location Outdoor
For Use in Walls Yes
For Use on Wood Yes
Formaldehyde Free Yes
ENERGY STAR Certified Yes
GREENGUARD Gold Certified Yes
Warranty Limited lifetime
Package Quantity 1
Package Weight (lbs.) 15.1

Frequently Asked Questions (FAQ):

Q: Can this insulation be used on exterior sheathing?
A: Yes, it is suitable for exterior sheathing, foundation walls, cavity walls, and commercial applications.


Q: Is the board faced or unfaced?
A: Unfaced XPS foam board.


Q: What is the R-value per inch?
A: R-5 per inch; the 3-inch panel provides R-15.


Q: Does it resist mold and mildew?
A: Yes, it is mold/mildew resistant with excellent moisture resistance.


Q: Is special tooling required to cut it?
A: No, panels are lightweight and easy to cut with standard tools.


Sculptural Warmth Meets Industrial Strength

This sleek pink board brings modern performance to the envelope of your home, streamlining thermal comfort with a polished, architectural presence. The squared edges and 3-inch profile create crisp lines that layer beautifully behind cladding, supporting a clean, tailored aesthetic. Style it as continuous exterior insulation to elevate energy efficiency and reduce thermal bridging—smart luxury you can feel. A refined essential for resilient, high-design living.


Upgrade your envelope with FOAMULAR NGX 400 and lock in R-15 performance—add to 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: 4314077904

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4.4 ★★★★★
Based on 8 reviews
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B. Wayne
Draper, US
★★★★★ 5
amazinggg!!
Color: Light Brown, Size: Throw (50" X 60"), Color: Light Brown, Size: Throw (50" X 60")
i loveee this blanket. after opening and breaking the air seal i threw it in the dryer for 20 minutes to fluff it up and it's perfect. it's very thick and slightly weighted (3-5 lbs) and super duper stretchy. it's double sided so you can use it facing any way you want. i've never tried either brands but from everything i've seen, this is pretty much an exact duplicate to the lola brand and comfrt brand blankets. i do wish they made more size and color options but other than that i'm obsessed. (for size comparison reference, i have a queen bed!)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
C
Verified Purchase
Christina Garner
Lowell, US
★★★★★ 5
Incredibly soft!
Color: Cream, Size: Throw (50" X 60")
I absolutely love this Bedsure blanket! It is incredibly soft right out of the package and feels cozy without being too heavy. The fabric is plush and smooth, making it perfect for lounging on the couch, layering on the bed, or staying warm during chilly nights.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
M
Verified Purchase
Maddie
New York, US
★★★★★ 5
Love this blanket!!!
Color: Cream, Size: Throw (50" X 60")
I absolutely LOVE this blanket!! It is an exact dupe for the “Lola” blanket. One of my friends has one and it feels the same and at just a fraction of the cost! It’s so soft and stretchy. It has such a nice weight to it and is the perfect size. I have already ordered 3 more for gifts this Christmas. I’m surprised this isn’t sold out!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2025
E
Verified Purchase
emmasize
Omaha, US
★★★★★ 5
Incredible Dupe
Color: Pink, Size: Throw (50" X 60")
I never leave reviews, but I was looking for a dupe blanket for my kiddos after getting a much more expensive brand blanket for myself, and this one is excellent. It’s double-sided so the same mega-soft on each side and cozy but not too heavy. I’m now getting them as Christmas gifts for everybody. A+ purchase
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Reviewed in the United States on December 15, 2025
A
Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 5
Oh my!!!
Color: Pink, Size: Throw (50" X 60")
This is the softest blanket ever! I sleep with it next to my skin and my bigger blanket on top because I so love how soft it is. If they ever make this in a larger size I will definitely get it!!!! LOVE THIS!!!!
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Reviewed in the United States on December 18, 2025

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