Double lattice mat has strip-form insert with width corresponding to clear space between longitudinal bars, a length corresponding to length of longitudinal bar, and thickness corresponding to thickness of longitudinal bar

摘要

The double lattice mat has a number of vertically extending bars and horizontally extending transverse bars connected to them. The mat has a strip-form insert with a width corresponding to the clear space between the longitudinal bars, and with a length corresponding to the length of a longitudinal bar, and a thickness corresponding to the thickness of a longitudinal bar. The inserts may consist of a sound-insulating material.