Do it Best Fiberglass Insulation
Reduces heating and cooling costs by increasing the insulating value of walls, ceilings, and floors. Keep your house warmer in the winter and cooler in the summer. Easy, DIY installation. Thickness: R11 3-1/2", R13 3-5/8", and R19 Kraft 6-1/2", R19 unfaced 6-1/4"