The International Mechanical Code speaks about the E84 being a requirement for supply and return air duct plenum construction as well as what is encased inside of that particular plenum. Inaba Denko America’s Paircoil meets those requirements as it comes prepared.
The small and the larger line comes together in one insulation piece, and by separating the middle of the 2, and you’ll spread those apart as needed. Paircoil is a premium line set designed for mini splits and VRF applications.
