R40x16 Fiberglass Batt Insulation - Johns Manville

Johns Manville R40 fiberglass batts deliver exceptional thermal resistance, making them a reliable choice for attics, cathedral ceilings, and projects that demand high energy efficiency. Designed for 16" on-center framing, these batts provide a secure fit that minimizes gaps and ensures consistent coverage.

Manufactured from durable fiberglass, they are naturally non-combustible and resistant to mold and mildew, promoting long-term safety and performance. Lightweight and easy to install, they maintain their shape over time to deliver dependable insulation results.

Ideal for cold climate applications, Johns Manville R40 batts help reduce energy costs while improving comfort and meeting strict building code requirements.

-Material: Fiberglass
-Coverage: 32 Sqft
-Thickness: 11.3"
-Width: 16"
-Length: 48"
-Framing: Wood
-Batts: 6 Pieces