Surface Mounted Door Closer, Suitable for 60~80kg Door

1. What size and weight capacity door closer do I need for an interior door?

Most residential interior doors fall within the range of standard light-duty closers. Common specifications for interior door closers include a maximum door weight of around 40–60 kg and a door width of up to 850–950 mm, corresponding to EN power size 2 or 3 . For lighter interior doors (e.g., hollow-core or lightweight panel doors), a compact surface-mounted damper rated for doors up to 36 inches (914 mm) wide and 33–88 lbs may also be suitable . Always measure your door's width, estimate its weight, and cross-check with the closer's published rating before ordering.

2. Will a door closer slam my interior door, or can I adjust the closing speed?

Interior door closers are specifically designed to prevent slamming. Models intended for room doors feature adjustable closing speeds, allowing you to dial in a smooth, quiet close rather than a bang . Some surface-mounted dampers are engineered to take control of the door only at the final 15° of travel, ensuring a soft final close regardless of how firmly the door was pushed . After installation, you can fine-tune the hydraulic valves to match your preference and the door's weight.

3. Can I use an outdoor or heavy-duty door closer on an interior door?

Technically you can mount one, but it is not recommended. Interior door closers are designed for indoor conditions and are typically lighter and more compact. Units designed for exterior use are built to withstand wind, moisture, and temperature extremes, and they may be oversized or over-powered for a lightweight interior door . Conversely, an interior-rated closer should never be installed on an exterior door, as it may fail under weather exposure or wind load. Match the closer to the door’s actual environment and duty level.