Telephony manholes We have several models of precast concrete manholes, perfect for urbanization works. Here you can see them and if you are interested or have any doubt, contact us. We advise you Types of Precast Concrete Telephony Manholes Telephony manhole type "M"30*30*34 74KG 30*30*55 205KG Telephony manhole type "H"70*80*82 800KG Telephony manhole type "D"90*110*100 1200KG Telephony manhole type "DM"90*48*96 855KG