The JCW Acoustic & Fire Socket Box Inserts - Single x 35mm are designed to improve both acoustic insulation and fire protection in electrical socket installations. These inserts fit neatly into single 35mm socket boxes, effectively sealing gaps and reducing the passage of sound and smoke through wall penetrations. Manufactured from intumescent materials, the inserts expand when exposed to heat, helping to maintain fire barriers and comply with relevant building regulations. Easy to install without specialist tools, the JCW Acoustic & Fire Socket Box Inserts provide a reliable solution for enhancing both safety and comfort in residential or commercial buildings.