Manthorpe GL300 Access Panel - 300mm x 300mm Description Out of sight but always available, the Manthorpe access panel range allows for quick and simple entry to concealed plumbing, electrics and other utilities. The modular design allows for installation in a matter of minutes and the flush-fit finish means they will never look out of place in a modern kitchen or bathroom. For easy access to Soil / Waste pipes. Electric wiring systems. Fuse boxes / Switches. Controls / Connection links. Valves / Stopcocks / Plumbing. The product is lightweight, easy to fit and is manufactured from High-Impact Polystyrene (HIPS) allowing for a smooth textured finish to the panel which can be painted over if required.