Gray cast iron is the best material for manholes, boxes and inlets to be used for roads. Grey cast iron products perfectly dampen vibrations and dissipate heat. They are heavy and not prone to pitting corrosion. They are produced in A15, B125, C250, D400 classes. Covers can be made of cast iron only or be filled with concrete (B, C, D classes). Body height can be either H115 or H150. Manholes are adjusted to locking covers. Additionally, covers with vents are available. Products are offered both raw or painted with ecological paint. The covers can be provided with any logo.