Which form of fiberglass insulation is frequently supplied as pre-cut panels or sheets for ease of installation?

• A. Wrap
• B. Pre form
• C. Board
• D. Batt insulation

Answer: (B)

Fiberglass insulation comes in several forms, and the one designed to be delivered as ready-made panels or sheets is the pre-formed type. These are manufactured in standard panel sizes so you can install them with minimal cutting, simply fitting them into walls, ceilings, or other cavities. The main benefit is a quicker, cleaner install with a consistent thickness and R-value across joints, which reduces gaps where heat can escape. This makes pre-formed panels especially convenient for straight, flat spaces where you want to minimize on-site trimming. Other forms, like batt insulation, come as flexible blankets that you still cut and fit, while board insulation uses rigid panels that are cut to fit irregular shapes. Wrap is used for enclosing ducts or pipes.