Is a 305mm or 400mm Toilet Better for Your Space？

When installing a toilet, it is important to pay attention to the toilet rough-in distance. Different toilets have different rough-in measurements, and if there is an error in the rough-in dimension, it may prevent the toilet from being installed properly. Below, we will introduce the differences between a 305mm and a 400mm toilet.

Differences between 305mm and 400mm toilets：

1、The distance from the waste outlet center to the wall is different.

2、The distance from the wall after the toilet is installed varies; the gap with a 400mm toilet will be greater than that of a 305mm toilet.

3、The specifications differ; a 305mm toilet is suitable for smaller spaces, while a 400mm toilet is suited for larger spaces.

Considerations for toilet installation：

1、Before installing the toilet, the installer will check the waste outlet for any debris or dirt. They will also check if the floor is even; if not, it will need to be leveled. Failing to level the floor may lead to an uneven installation, affecting usability.

2、It is essential to examine the toilet's siphon bend for a smooth, even glaze. If the glaze is rough, it may cause blockages after installation, impacting normal usage.

3、It is generally advisable to install a siphonic toilet, as it offers better flushing performance and can quickly remove waste. In contrast, direct flush toilets have larger pipes and can more easily deal with larger debris.

4、During the installation process, it is crucial to inspect the toilet carefully for any visible defects or color discrepancies. If these issues are not addressed before installation, it may be quite troublesome to resolve later.

5、Be sure to pay attention to the toilet rough-in measurement. If the rough-in dimension is 300mm, then a toilet with a 300mm rough-in should be chosen. An incorrect size may lead to installation issues, and even if installed, it can affect the toilet's waste disposal effectiveness.

In summary：we hope this information about the differences between 305mm and 400mm toilets is helpful. If you would like to learn more related knowledge, please check out the information available on Hawkrown.