Cast iron register units were commonly introduced in the mid to late Victorian period with the advent of central heating systems, usually relying on coal. It was a short retooling interval for manufacturers to make the jump from fabrication of cast iron firebacks and coal burning fireplace stoves and inserts to making cast iron grilles for the floor.
Not surprisingly, cast iron heat registers are able to withstand a great amount of downward force. They are typically about one quarter inch thick faceplates. However, cast iron is somewhat brittle, so don't drop a heavy pointed object on them or you may not like the results. All our registers have the cast iron protected from oxidation through either powder coat, baked oil, or a protective clear coat. That works well, but if you live at the beach you would probably be better off with cast bronze (which is often used on ocean going vessels). You can see bronze registers at our site at heatregisters.com
We are proud to showcase a number of modern interpretive designs that are available in quite a few finishes and sizes. They add an exciting dimension and really make an extraordinary designer statement.
Our units are typically shipped for floor usage and thus do not usually need mounting holes and screws. However, if you are mounting in a surface such as a wall then we are able to offer them pre-drilled and supplied with screws. You definitely do not want to have these falling out and onto your toes. They are very heavy, as you would expect!
As you could probably discern from the name this type of register is cast in a mold, which is typically constructed of a specialized sand, a silaceous precipitate. As a result, they have a bumpy texture, as opposed to other types of metal, which make be very smooth. That is part of the charm factor and is often the reason why consumers are attracted to them. Because they are cast in a mold, it is not particularly easy to make custom sizes. The costs of developing a casting mold are substantial and are typically only acceptable for the projects with the largest budgets. In addition to that, there is quite a bit of time involved in developing a new casting mold, often one to two months.