Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

Snappy 4-in Insulated Flexible Duct R 4.2

Get Pricing & Availability

  • Formaldehyde free fiberglass insulation helps make your home safer by reducing your potential exposure to formaldehyde

  • Available duct sizes of 3 In. through 22 In. in R4.2, R6 and R8 insulation thickness

  • Oversized core makes it easier fit over collars and register boxes

Best Price. Guaranteed
Find a lower price on an exact item? We'll match it. Some exclusions apply.
Price Guarantee
FREE Returns
Return it in store or ship it back for free. Eligibility rules apply.
Return Policy
FREE Shipping
Delivery is on us for orders over $45. Some exclusions apply.
Shipping Details