STÖRNCH Rubber Support Feet are a neat and tidy nonpenetrative roof top support solution. The feet have 40mm x 20mm aluminium channel recessed into the top face to allow for easy fixing of services. Suitable for pipework, duct and cable tray runs. The Rubber Support Feet are made of durable, recycled rubber, which offers built-in anti-vibration and makes it both economical and environmentally responsible.