Apartment mailbox calculator: how many blocks your building needs, and which ones

When a block of flats replaces its mailboxes, the first question is nearly always the same: how many blocks do we need, and with how many sections? The number of flats is known, but apartment mailboxes are sold as blocks of 2 to 10 sections, and the same total can be put together in many ways. So that nobody has to work it out on paper or call us, we have built a calculator.

Open the calculator

How it works

1. Choose the series and the colour. One calculation is one series and one colour, so that all mailboxes in an entrance look the same.
2. Enter the number of entrances and flats. Flats can be given as one figure for the whole building — the calculator shares them between the entrances evenly — or for each entrance separately when the numbers differ.
3. Look at the suggested options. Each one shows its price straight away, and whether the blocks are in stock or will be made to order.
4. Adjust if you need to. Press a block to replace it with another size, remove it or add one more. The calculator shows at once whether every flat has a mailbox.
5. Add everything to the cart with one button, or copy a link to the calculation and send it to your neighbours or the management company.

How we split flats into blocks

The calculator works the way we do when a customer calls and asks for advice:

• Equal blocks side by side. If 15 flats divide into three blocks of 5 sections, that is the best option: the row is even and symmetrical.
• As few blocks as possible. Fewer blocks mean fewer fixings and less space on the wall.
• A comfortable height. Blocks of 5 to 7 sections are the usual choice, so the first option does not use taller ones. When wall space is tight, an option with fewer blocks is shown next to it.
• What is in stock. If the blocks you need are already in the warehouse, the calculator offers an option built from them — it is available right away.

When the number does not divide evenly, the blocks are kept as close in size as possible: for 13 flats, for example, 7 and 6 sections.

A spare mailbox

Some buildings take one mailbox more than they have flats — for the management company or for meter readings. One tick adds a spare mailbox to every entrance. It sometimes evens out the split as well: 14 flats and one spare mailbox are exactly three blocks of 5 sections.

Will it fit on the wall

Under each entrance you can see how much space the set takes — width and height in centimetres. If the wall is narrow or low, enter its size and the calculator will warn you when the chosen blocks do not fit. Blocks of the horizontal series can be arranged in one row or in two.

Price, availability and lead times

The price is worked out from the shop's current prices, VAT included. Every option and every line shows whether it is in stock. When only some of the blocks are in stock, it says so plainly: how many are available now and how many will be made to order. The factory lead time is approximate, from our experience; we confirm the exact date after the order.

Try it

A calculation takes a couple of minutes and commits you to nothing. If your building is unusual — an awkward wall, several series or a large quantity — write or call us and we will help.

Work out mailboxes for your building