Owens Corning R- 10. 2-in x 4-ft x 8-ft Foamular Unfaced Foam Board Insulation(10) $ 59.76 − Owens Corning R- 10. 2-in x 4-ft x 8-ft Foamular Unfaced Foam Board Insulation(10) quantity + Add to cart Buy it now Standard Shipping FREE Estimated delivery in 2–3 days. Fast Delivery Get next-day delivery on orders over $50! FREE Spend $50 or more to enjoy free shipping and next-day delivery. Next-Day Eligible