• Reinforced and Stable Structure: The system of two bolted semi-frames reduces internal casting stresses, ensuring perfect flatness and minimizing the risk of subsidence or cracks in the surrounding concrete.
• Bolted Safety Closure: The lid firmly screwed to the frame prevents accidental openings due to strong vibrations or vandalism, protecting public safety and underground utilities.
• Total Odor Isolation: Thanks to the filling of the "U" seat with fine sand or equivalent materials, the escape of harmful or foul-smelling sewer gases is blocked, improving the healthiness of the urban environment.
• Wide Inspection Access: The clear opening of 60x120 cm is ideal for working on complex ducting, allowing easy passage for technicians and sampling instruments.
• Structural Non-Slip Grip: The geometric reliefs uniformly distributed on the lid ensure maximum tire grip and prevent pedestrians and operators from slipping in case of rain.

The h638_160 model is ideal for covering electrical junction boxes, telecommunication nodes, large sewage manholes, and underground technological systems. It finds its perfect placement in high-traffic roads, loading and unloading areas, industrial squares, port docks, and logistics parking lots for heavy vehicles.

Choosing this manhole cover means opting for a **robust and reliable long-term road engineering solution**. With a structural weight of 140 kg and a height of 100 mm, it offers the stability and critical mass necessary to withstand the hammering effect of heavy traffic unscathed. It’s the right investment for public bodies, multi-utilities, and construction companies that demand EN 1563 certified materials capable of eliminating extraordinary post-installation maintenance costs.

What is meant by a frame in two bolted semi-frames?

Given the significant length of the manhole cover (1.4 meters), the frame is cast in two symmetrical halves which are then firmly joined by bolts during assembly. This technical feature provides greater structural flexibility and reduces thermal and mechanical deformations.

How does the odor sealing system work?

The inner perimeter of the frame features a "U"-shaped groove. By filling this channel with fine sand, special grease, or plastic sealants before inserting the lid, a blind joint is created that prevents the gases present in the manhole from rising to the surface.

Are the lid fastening bolts included?

Yes, the mechanical locking system is supplied complete with all the necessary hardware to firmly fix the lid to the frame, ensuring a stable and anti-immediate removal closure.

Is it possible to insert our entity or company logo?

Certainly. The rectangular lid has a dedicated flat area structured to accommodate custom lettering, acronyms, or logos upon request (e.g., technological networks, sewers, aqueduct), facilitating the identification of infrastructure ownership.