Harrier GD can supply a range of cast iron grates. Not only do these look good and authentic, as used in many glasshouses of the late 19th and 20th century, but they also play a very functional role. The grates are set on top of a duct (typically approx 0.6m wide and 0.45m deep) into which the heating pipes are fitted. This allows the heat to rise through the grates into the greenhouse. It also means that the paths are dry and reduce algae and mould growth. In the Spring, an added bonus is they offer a warm place for standing seed trays. This will encourage healthy root growth and early development.
Another practical feature is that water can be poured through the grates, which then falls on the heating pipes, and in turn evaporates, creating high humdity which is good for succulents and some orchids.
They can also be used in conjunction with other flooring, purely as an aesthetic feature.